Chiphell - 分享与交流用户体验

查看: 7763|回复: 27

AMD Radeon HD 5850 真实产品评测

发表于 2009-9-30 12:58 | 显示全部楼层 |阅读模式
原文:The Tech Report

The Radeon HD 5850 is off to a promising start here, edging outNvidia's GeForce GTX 285, its most direct competitor, at allresolutions. We're also getting our first glimpse at how Cypressperforms after a little pruning. At resolutions of 1680x1050 and up,the 5850 lies almost exactly half-way between the 4890 and 5870.Product segmentation at its finest, folks.

The tables turn here, with the GeForce GTX 285 scoring a small win over the 5850. Since Wolfensteinuses a modified version of the id Tech 4 engine, we can probably chalkup Nvidia's edge to its traditionally better OpenGL implementation.

The Radeon HD 5850 is back in full force in Left 4 Dead,although this test is a bit like the Yankees crashing a little leaguegame. At 2560x1600 with AA and AF cranked, even the slowest card hereruns Left 4 Dead well beyond the 60 Hz refresh rate of most LCD monitors.

We're back in the major leagues here, and the Radeon HD 5850 continues to outpace its GeForce rival at higher resolutions.
In surprising twist, the Radeon HD 4890 pulls ahead of those two twocards at 1680x1050 and 1920x1200. If we were the betting sort, we'd pinthe odd result on the 5850's lower core speed (725 MHz vs. 900 MHz forour 4890), driver immaturity, or some obscure bottleneck in the newCypress design.

The Radeon HD 5850 scores another win against the GeForce GTX 285 here, and it puts the 4890 back in its place, as well.

The 5850's average frame rate lies almost equidistant between thatof the 5870 and 4890 yet again. Its minimum frame rate is only slightlyhigher than 4890's, though. A 23 FPS average isn't really playable tobegin with, of course, but this test gives us a rare glimpse at howthese GPUs scale when pushed to their limits by a DirectX 10 game.

            Power consumption
We measured total system power consumption at the wall socket using anExtech power analyzer model 380803. The monitor was plugged into aseparate outlet, so its power draw was not part of our measurement. Thecards were plugged into a motherboard on an open test bench.
The idle measurements were taken at the Windows desktop with the Aero theme enabled. The cards were tested under load running Left 4 Dead at a 2560x1600 resolution, using the same settings we did for performance testing.

Even the Radeon HD 5870 consumes less power than the GeForce GTX285, so there's really no contest between the Nvidia card and the new5850. AMD's DirectX 11 offerings both have about the same idle powerdraw—a testament to Cypress' power efficiency—but the 5850 draws a good36W less than its big brother under load.
Noise levels
We measured noise levels on our test system, sitting on an open testbench, using an Extech model 407738 digital sound level meter. Themeter was mounted on a tripod approximately 8" from the test system ata height even with the top of the video card. We used the OSHA-standardweighting and speed for these measurements.
You can think of these noise level measurements much like our systempower consumption tests, because the entire systems' noise levels weremeasured. Of course, noise levels will vary greatly in the real worldalong with the acoustic properties of the PC enclosure used, whetherthe enclosure provides adequate cooling to avoid a card's highest fanspeeds, placement of the enclosure in the room, and a whole range ofother variables. These results should give a reasonably good picture ofcomparative fan noise, though.

The 5850's lower power consumption pays off, allowing for much lowernoise levels under load. The Radeon HD 5850 is nevertheless a tadlouder than the 5870 at idle, although it still does better than theGTX 285 across the board.
GPU temperatures
For most of the cards, we used GPU-Z to log temperatures during ourload testing. In the case of multi-GPU setups, we recorded temperatureson the primary card. However, GPU-Z didn't yet know what to do with the5870, so we had to resort to running a 3D program in a window whilereading the temperature from the Overdrive section of AMD's Catalystcontrol panel.

The Radeon HD 5850 runs considerably cooler than either the 5870 orthe GeForce GTX 285—an unexpectedly strong showing, seeing as the 5850has a smaller cooler than the 5870 and lower noise levels under load. What a refreshing change from the blistering-hot temperatures of previous high-end cards.

Well, there you have it. The Radeon HD 5850 manages to outshine thefastest single-GPU GeForce card overall while costing less, drawingless power, and producing less noise. We wouldn't be surprised to seeNvidia cut prices in the near future, but in any case, the 5850 ishands-down the second-fastest single-GPU graphics card on the market.
Performance isn't the 5850's only strength, either. AMD's newcomeralso brings higher-quality antialiasing and filtering algorithms, aswell as next-generation DirectX 11 goodness, so it'll let you enjoyextra eye candy in upcoming games while making old ones look evenbetter. That functionality would be worth a price premium if the 5850commanded one, but it doesn't—at least not for now.
AMD Radeon HD 5850
September 2009
The Radeon HD 5850 is also a compelling solution for quiet,low-power, or compact builds, since it delivers excellent performancewith a more reasonable power and noise footprint than previous high-endcards. And it doesn't have a freakishly long circuit board like theRadeon HD 5870, which is always a plus.
Speaking of the 5870, we're now left wondering whether that behemothis worth the $120 premium over its little brother. The 5850 may beslower, but for the most part, it's still quick enough to generatesmooth frame rates at 2560x1600 with AA and AF cranked up in currentgames (Crysis Warhead's "Enthusiast" preset excepted). We'llhave to see whether that changes once DirectX 11 games start hittingstores, but for now, the 5850 sure seems to be fast enough for today'stitles.
One could certainly make a case for the 5870 for users who wish togame on triple-monitor setups or with supersampled antialiasing, sincethose activities will benefit from greater horsepower. However, for thevast majority of even hardcore gamers, the Radeon HD 5850 looks to beplenty powerful.
发表于 2009-9-30 13:12 | 显示全部楼层
发表于 2009-9-30 13:14 | 显示全部楼层
差不多就是5870的 85%效能……很稳定……价格合理的话就好了。
发表于 2009-9-30 13:42 | 显示全部楼层
发表于 2009-9-30 13:56 | 显示全部楼层
发表于 2009-9-30 14:07 | 显示全部楼层
发表于 2009-9-30 14:14 | 显示全部楼层

AnandTech Radeon HD 5850 评测

Battleforge: The First DX11 Game
As we mentioned in our 5870 review, Electronic Arts pushed out the DX11 update for Battleforge the day before the 5870 launched. As we had already left for Intel’s Fall IDF we were unable to take a look at it at the time, so now we finally have the chance.
Being the first DX11 title, Battleforge makes very limited use of DX11’s features given that the hardware and the software are still brand-new. The only thing Battleforge uses DX11 for is for Compute Shader 5.0, which replaces the use of pixel shaders for calculating ambient occlusion. Notably, this is not a use that improves the image quality of the game; pixel shaders already do this effect in Battleforge and other games. EA is using the compete shader as a faster way to calculate the ambient occlusion as compared to using a pixel shader.
The use of various DX11 features to improve performance is something we’re going to see in more games than just Battleforge as additional titles pick up DX11, so this isn’t in any way an unusual use of DX11. Effectively anything can be done with existing pixel, vertex, and geometry shaders (we’ll skip the discussion of Turing completeness), just not at an appropriate speed. The fixed-function tessellater is faster than the geometry shader for tessellating objects, and in certain situations like ambient occlusion the compute shader is going to be faster than the pixel shader.
We ran Battleforge both with DX10/10.1 (pixel shader SSAO) and DX11 (compute shader SSAO) and with and without SSAO to look at the performance difference.
What we were expecting and what we got have been entirely different. We were told that the use of the compute shader would improve SSAO performance (and AMD provided in-house benchmarks as such), but that’s absolutely not happening here. On the 5850 the performance of the game using the compute shader is virtually identical to that of using DX10.1 pixel shaders. About the only thing that went as expected here is the performance hit from using SSAO – it’s a hit of 35% even on the 5870 using DX11.
We’re still trying to get to the bottom of this, but at this point we don’t have any identifiable problems in our testing. In this case, the use of the compute shader isn’t having the kind of impact it should be having. We’ll keep looking at the issue, and update this if we do find something different.
Our only other thought on the matter is the whether SSAO is worth the performance hit if these numbers are correct. AMD’s press shot is one of the best case scenarios for the use of SSAO, and in the game it’s very hard to notice. For a 35% drop in performance, it’s hard to justify the slightly improved visuals.
CPU:Intel Core i7-920 @ 3.33GHz
Motherboard:Intel DX58SO (Intel X58)
Chipset Drivers:Intel (Intel)
Hard Disk: Intel X25-M SSD (80GB)
Memory:Patriot Viper DDR3-1333 3 x 2GB (7-7-7-20)
Video Cards:ATI Radeon HD 5870
ATI Radeon HD 5850
ATI Radeon HD 4870 X2
ATI Radeon HD 4890
ATI Radeon HD 4870 1GB
ATI Radeon HD 4850
ATI Radeon HD 3870
NVIDIA GeForce GTX 295
NVIDIA GeForce GTX 285
NVIDIA GeForce GTX 275
NVIDIA GeForce GTX 260 core 216
NVIDIA GeForce GTS 250
NVIDIA GeForce 8800GT

Video Drivers:NVIDIA ForceWare 190.62
ATI Catalyst Beta 8.66
ATI Catalyst 9.9
OS:Windows 7 Ultimate 64-bit

Crysis: Warhead

Kicking things off, we’ll start with Crysis: Warhead. Warhead is still the single most demanding game in our arsenal, with cards continuing to struggle to put out a playable frame rate with everything turned up.
With Crysis: Warhead being so GPU limited, we see a pretty standard breakdown of GPU performance. The 5850 loses only to the 5870 for single-GPU cards. The 5850 Crossfire on the other hand gives us some surprising results, losing to the GTX 285 in SLI in spite of a single 5850 beating a single GTX 285. Clearly NVIDIA is getting better multi-GPU scaling out of Warhead than AMD is.
Far Cry 2

Far Cry 2 is another foliage-heavy game. Thankfully it’s not nearly as punishing as Crysis, and it’s possible to achieve a good framerate even with all the settings at their highest.
Have you ever wondered about what point Far Cry 2 becomes CPU limited? Well now we know. The 5850 in Crossfire manages to turn in the same score as the 5870 in Crossfire: 75fps. We’re CPU limited even at these high resolutions and settings.
Meanwhile the 5850 hits the mark AMD is shooting for, coming in some 20% higher than the GTX 285 and overshadowed only by the 5870 and multi-GPU setups.
World of Warcraft

Blizzard’s genre-dominating MMO is our next benchmark. As WoW is known to be CPU limited, we can turn it up to rather silly settings and still get a playable framerate on just about anything.
For whatever reason the 5800 series cards do particularly well here. Even the 5850 can completely decimate the GTX 285, both in single card and Crossfire/SLI configurations. You can see the CPU limitations in this game come to light, as at the very top the 5870 and 5850 are nearly tied.
HAWX is another game that’s not particularly GPU-bound, which means we can turn in some high numbers.
Once more the story is the 5850 coming in ahead of all single-GPU setups other than the 5870. However in Crossfire it beats the GTX 285 SLI by a single frame. A pattern is starting to emerge here with respect to multi-GPU performance.
Resident Evil 5

The latest installment of Capcom’s popular survival horror series just arrived for PCs a few days ago. As is often the case with console ports, it’s not particularly GPU starved, and can crank out high numbers on just about anything.
The 5850 once again defeats all earlier cards, and the 5850 Crossfire does the same to all multi-GPU solutions. Here we also see AMD’s fortunes reverse on the multi-GPU scaling front, where the GTX 285 SLI doesn’t beat the 5850 Crossfire like it has in past benchmarks.
Batman: Arkham Asylum

Batman: Arkham Asylum is another brand-new PC game, and has been burning up the review charts. It’s an Unreal Engine 3 based game, something that’s not immediately obvious from just looking at it, which is rare for UE3 based games.
NVIDIA has put a lot of marketing muscle into the game as part of their The Way It’s Meant to Be Played program, and as a result it ships with PhysX support and 3D Vision support. Unfortunately NVIDIA’s influence has extended to its anti-aliasing abilities too, as its in-game selective AA abilities only work on NVIDIA’s cards. AMD’s cards can perform AA on the game, but only via traditional full screen anti-aliasing, which isn’t nearly as efficient. Because of this, this is the only game where we will not be using AA, as doing so produces meaningless results given the different AA modes used.
Since we can’t use AA, the name of the game is still “runaway performance”, with the 5850 bringing in 88fps. Meanwhile this is as close a gap between the 5850 and the GTX 285 as we’re going to see, with the 5850 beating the GTX 285 by only a few percent.  The 5850 Crossfire maintains a similar gap, but doesn’t fall behind as it has in some tests.
Left 4 Dead

Valve’s venerable Source engine continues to roll on with Left 4 Dead, their co-op zombie shooter. As the Source engine is CPU limited, this is once again going to be a collection of ridiculously high frame rates
Once again we have a solid victory for the 5850 and 5850 Crossfire. We do see SLI scale better than Crossfire here, but it’s not enough to dethrone the 5850 Crossfire.
Power, Temperature, & Noise
With Cypress pared down some for the 5850, the power/temperature/noise situation takes on a different look. The 5870 ended up being hot, noisy, and more power-hungry than any other single-GPU setup. Let’s see if the 5850 can avoid that.
Looking at idle power, the results are the same as the 5870. This is to be expected as both are capable of reaching the same low idle power state. Crossfire results are similar, although the 5850 CF nudges itself higher than the 5870 CF on our charts; but this is within experimental variance.
As was the case with the 5870, the 5850 is among the lowest idling cards we have seen. It’s at the very bottom, only the Radeon HD 3870 and the GeForce GTS 250 can beat it, and even then just by a watt and a half.
Load power on the other hand gives us a surprising difference. While the 5870 was one of the most power-hungry single-GPU cards we tested, the 5850 moves half-way down the chart. At load it uses less power than 4870 and most of the GTX series, in effect using less power than all of its closest performance competitors. In fact the difference in load power is beyond the specs; AMD’s specs call for a 37W difference, but here we have an 86W difference. Even after accounting for power supply inefficiencies, this is still a huge difference. We’re not seeing clock throttling occurring, so at this point we don’t have a complete explanation for what we’re seeing beyond the fact that we’re sure these are legitimate results.
The end result is that it’s clear that the 5850 is going to work well in systems with limited power abilities. At the same power envelope it’s significantly faster than anything else, and at the same performance level it’s significantly less power hungry than anything else.
As for Crossfire, this gap closes somewhat in that configuration. Here it’s only 114W under the 5870 CF, and just 93W under the GTX SLI cards. Even with its low power usage, the 5850 can’t erase the fact that multi-card solutions eat much more power than single-card solutions; it’s 90W over the GTX295, for example.
We’ll also take a look at power usage in Warcraft quickly, since it doesn’t trigger throttling in our other AMD cards. Warcraft doesn’t push these cards like OCCT does, so the overall power usage is lower, but the overall situation is virtually the same. The 5850 comes in at 55W less than the 5870, and this time bests the entire GTX lineup by at least 25W. We also see Crossfire do better here; now the 5850 CF can beat even multi-GPU cards like the 4870X2 and the GTX 295.
Interestingly enough, in spite of the same idle power as the 5870, the idle temps are not the same. The 5850 comes in at a chilly 42C, bringing it in line with the 4850 and the 3870. Only the GTS 250 can beat it by 3C, and in turn the 5850 beats its closest competitors, the GTX series, by at least 3C.
With lower power usage and a similar cooler, the 5850 is capable of keeping cooler than the 5870. While the 5870 approached 90C, the 5850 we’re testing was able to stay at 80C. This makes it the only AMD card we’ve tested that isn’t approaching 90C, which is good news for those of you with limited case ventilation. However it still loses to the GTS 250, and most of the GTX cards. We know NVIDIA is consuming more power, so clearly they have a more effective cooler in use if it’s able to cool their cards that well.
Finally we have noise. At idle virtually everything is the same, the 5850 and the 5870 come in at 46.6dB. To see a significant difference here, we would have to switch to a passively-cooled card.
发表于 2009-9-30 14:15 | 显示全部楼层
发表于 2009-9-30 14:21 | 显示全部楼层
发表于 2009-9-30 14:32 | 显示全部楼层
发表于 2009-9-30 14:49 | 显示全部楼层
发表于 2009-9-30 14:57 | 显示全部楼层
allensakura 发表于 2009-9-30 14:49

发表于 2009-9-30 14:59 | 显示全部楼层
发表于 2009-9-30 15:24 | 显示全部楼层
发表于 2009-9-30 15:36 | 显示全部楼层
发表于 2009-9-30 16:31 | 显示全部楼层
mingni120 发表于 2009-9-30 16:20

发表于 2009-9-30 16:46 | 显示全部楼层
发表于 2009-9-30 16:51 | 显示全部楼层
电源接口看着就不爽 2300还不如直接上5870
发表于 2009-9-30 16:58 | 显示全部楼层
发表于 2009-9-30 16:59 | 显示全部楼层
发表于 2009-9-30 17:03 | 显示全部楼层
发表于 2009-9-30 17:09 | 显示全部楼层
pard2 发表于 2009-9-30 17:03
发表于 2009-9-30 18:52 | 显示全部楼层
发表于 2009-9-30 19:15 | 显示全部楼层
冰山一角 发表于 2009-9-30 16:59


发表于 2009-9-30 19:18 | 显示全部楼层
georgeHo 发表于 2009-9-30 18:52


发表于 2009-9-30 19:40 | 显示全部楼层
发表于 2009-10-1 21:33 | 显示全部楼层
发表于 2009-10-1 23:08 | 显示全部楼层
不错 5850完胜285
您需要登录后才可以回帖 登录 | 加入我们


小黑屋|手机版|Archiver|Chiphell ( 沪ICP备12027953号-5 )沪公网备310112100042806 上海市互联网违法与不良信息举报中心

GMT+8, 2020-11-29 18:28 , Processed in 0.019186 second(s), 20 queries , Gzip On, Redis On.

Powered by Discuz! X3.2

© 2007-2020 All rights reserved.

快速回复 返回顶部 返回列表