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Ati Radeon HD 5800 Test

Radeon HD 5870: Review of the first DirectX 11 graphics card

DirectX 11, Eyefinity, 2.7 Teraflops - many keywords of AMD's new Radeon HD 5800 graphics card series have been known for weeks. PC Games Hardware checks if the surprisingly daring promises are kept and reveals which features make the Radeon HD 5870 the best card on the market.
Radeon HD 5870: Review of the first DirectX 11 graphics card
 
Radeon HD 5870: Review of the first DirectX 11 graphics card [Source: view picture gallery]

Have you ever dealt with a big challenge and it worked out faster and better than you have ever imagined? This is what AMD experiences at the moment if you believe in what the company says. The graphics section Ati already presents the first graphics card series which supports Microsoft's new API DirectX 11. So apparently AMD is winning the race for the first DX11 GPU after Nvidia had taken the lead in matters of DirectX 10 with the Geforce 8800 GTX back in 2006. The previous technology level, DirectX 9, was conquered by Ati in 2002 -with a huge advantage in time by the way. But being first is not everything - so what is the Radeon HD 5870 really capable of?

Radeon HD 5870 and HD 5850
Today Ati's Radeon HD 5800 series is launched with two graphics cards: The HD 5870 and the HD 5850. Although the specifications have been leaked to the Internet weeks ago, we nevertheless introduce the final versions again. Both, the Radeon HD 5870 and the smaller HD 5850, are fully compatible to DirectX 11 and have 1 GiByte of GDDR5 VRAM. Furthermore both cards are based on Ati's RV870 (codename "Cypress”), which is produced by TSMC in a 40 nanometer architecture. Although Cypress is only 338 square millimeters big it nevertheless consists of 2.15 billion transistors. For comparison: The RV790 (Radeon HD 4890) has only 959 million transistors. Even Nvidia's GT200(b) with its 1.4 billion circuits is beaten noticeably. With this budget Ati doesn't just implement DirectX 11, but also twice as much calculating units as in the HD 4870/4890.

The difference between the cards that are introduced today is primarily related to the calculation performance: While the HD 5870 has more than 1,600 shader and 80 texture units, the HD 5850 offers 1,440 respectively 72. The HD 5850 has lower clock speeds, too. Instead of 850/2,400 MHz (GPU/VRAM) it is running at 725/2,000 MHz. In theory those cuts limit the HD 5850 by about 20 percent in comparison to the HD 5870. Unfortunately we can't verify this thesis applies to games, too, since we don't have a sample of the HD 5850 yet. All our benchmarks deliver results for the HD 5870 in comparison to the rest of the graphics card market.

Quo vadis, Ati? Radeon HD 5870 X2, HD 5770 & Co.
According to AMD's plans the Radeon HD 5870 X2 is suppose to be released right in time for the Christmas trade. It will utilize two full RV870 chips which are running at the clock speeds of the HD 5850. Early the next year we will see "Juniper” and "Cedar” which bring DirectX 11 to the mainstream segment.

Hersteller AMD Radeon           Nvidia Geforce      
  HD 5870 HD 5850 HD 4870 X2* HD 4890 HD 4870 HD 4850 GTX 295* GTX 285 GTX 275 GTX 260-216
Chip Cypress (RV870) Cypress (RV870) 2 x RV770 RV790 RV770 RV770 2 x GT200b GT200b GT200b GT200(b)
Version (DirectX / Shader) 11 / 5.0 11 / 5.0 10.1 / 4.1 10.1 / 4.1 10.1 / 4.1 10.1 / 4.1 10.0 / 4.0 10.0 / 4.0 10.0 / 4.0 10.0 / 4.0
Process tech (Nanometer) 40 40 55 55 55 55 55 55 55 65/55
Transistors (Mio.) 2150 2150 2 x 965 965 965 965 2 x 1.400 1400 1400 1400
Engine clock (MHz) 850 725 750 850 750 625 576 648 633 576
Shader clock (MHz) 850 725 750 850 750 625 1242 1476 1404 1242
VRAM clock (MHz) 2400** 2000** 1800** 1950** 1800** 993 999 1242 1134 999
Numbers                    
Shader-ALUs 1600 1440 2 x 800 800 800 800 2 x 240 240 240 216
Texture Units 80 72 2 x 40 40 40 40 2 x 80 80 80 72
Quad-ROPs / -Render-Backends 32 32 2 x 16 16 16 16 2 x 28 32 28 28
VRAM (MiByte) 1024 1024 2 x 1.024 1024 512-1.024 512-1.024 2 x 896 1024 896 896
Bus width (Bit) 256 256 2 x 256 256 256 256 2 x 448 512 448 448
VRAM type GDDR5 GDDR5 GDDR5 GDDR5 GDDR5 GDDR3 GDDR3 GDDR3 GDDR3 GDDR3
Performance-Peaks                    
GFLOP/s (Single-Prec. MADD) 2720 2088 2 x 1.200 1360 1200 1000 2 x 596,2 709 674 537
Texel-Fillrate (MTex/sec.) 68000 52200 2 x 30.000 34000 30000 25000 2 x 46080 51840 50640 41472
Pixel-Fillrate (MPix/sec.) 27200 23200 2 x 12.000 13600 12000 10000 2 x 16128 20736 17224 16128
Peak Bandwidth (GiByte/sec.) 153,6 128,0 2 x 115,2 124,8 115,2 64,0 2 x 111,9 158,9 127,0 111,9
Misc.                    
Anti-Aliasing, best 8x SGSSAA, 24x CFAA 8x SGSSAA, 24x CFAA 24x CFAA 24x CFAA 24x CFAA 24x CFAA 16xQ CSAA 16xQ CSAA 16xQ CSAA 16xQ CSAA
Multi-Sampling, max. 8x 8x 8x 8x 8x 8x 8x 8x 8x 8x
Multi-GPU (Crossfire X / SLI up to 4 cards up to 4 cards up to 2 cards up to 4 cards up to 4 cards up to 4 cards up to 2 cards up to 3 cards up to 3 cards up to 3 cards
PCI-E.-Connectors (6-Pin/8-Pin) 2 x / 0 x 2 x / 0 x 1 x / 1 x** 2 x / 0 x 2 x / 0 x 1 x / 0 x 1 x / 1 x** 2 x / 0 x 2 x / 0 x 2 x / 0 x
Length of card (approx., mm) 282 ??? 267 241 241 234 270 267 267 267


* Single values don't necessarily doubled with a multi GPU setup.
** Value represent sum of both Write-Clocks of GDDR5
*** 8-Pin connector required


Picture gallery  (enlarge to view source)





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Author: Raffael Vötter (Sep 23, 2009)






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Comments (13)

Comments 10 to 13  Read all comments here!
greania09 Radeon HD 5870 Review of the first DirectX 11 grap...
Junior Member
17.12.2009 12:13
I know And its a persons decicion to like what they want to like. I absolutely HATE it when people say 'Oh, you cant watch this movie because its bad.' Well, movie revews are the custermers choice.
Kapral.Hicks Re: Radeon HD 5870: Review of the first DirectX 11 graphics card
Junior Member
25.09.2009 11:53
www.techpowerup.com/revie...

CF results, now I coud say, im impressed 285 is a trash comparing to this
Yapa Re: Radeon HD 5870: Review of the first DirectX 11 graphics card
Senior Member
24.09.2009 06:39
Guys I've read another review where they tested Eyefinity with a few games.

Sadly it didnt really work well... either the games did not detect the correct aspect ratio and stretched the image on the side monitors making it useless, or they would cut the top and bottom of the screen off making it impossible to see HUD menus etc...

I'm wondering how Supreme Commander would work? or any other RTS game for that matter... it would be great to see supreme commander on 3 monitors spanned across... awesome!

Yapa

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