backtop


Print 62 comment(s) - last by clovell.. on Oct 25 at 5:35 PM


(Click to enlarge)

(Click to enlarge)

(Click to enlarge)
Focus on smaller size, lower cost

Computer gaming advanced dramatically last year when ATI ushered in the DirectX 11 age with the Radeon HD 5870 graphics card. The introduction of the DisplayPort connector and Eyefinity multi-monitor support meant games could be played with many more pixels, leading to a better visual experience. Windows 7 was just about to launch, and gamers were eager for some major hardware upgrades.

However, production difficulties at TSMC meant that AMD's graphics division only shipped half the GPUs they were hoping to during the busy holiday shopping season. They still managed to sell over two million DX11 chips, but could've sold a lot more.

The original plans for this year's launch were for an entire lineup of 32nm GPUs, but TSMC scrapped their 32nm development in favor of the 28nm process. ATI took their 32nm designs and rejigged it for their third generation of 40nm products, codenamed Northern Islands. The high end consists of Barts, Cayman, and Antilles.

The new Radeon 6800 series uses the new Barts GPU and is comprised of the Radeon HD 6870 (Barts XT) and the Radeon HD 6850 (Barts Pro). The new chip is designed for slightly lower performance at a much lower cost. At 255 mm2, it is 25% smaller than the 334 mm2  Cypress chips it will replace.

A new seventh generation hardware tessellation unit doubles the performance of the Radeon 5000 series through improved thread management and buffering. Anisotropic Filtering has been enhanced by using a refined algorithm that addresses visible discontinuities in very noisy textures. It also allows for smoother transitions between filter levels. The third generation Unified Video Decoder (UVD3) adds hardware MPEG-4 decoding for DivX and xVid, as well as Blu-Ray 3D.

Both cards sport a dual-slot design and provide 2 mini-DisplayPort 1.2 connectors, 1 HDMI 1.4a connector, and 2 DVI ports. This allows the 6800 series to support up to four monitors natively.

Cards using the new chips and 1GB of GDDR5 will cost around $239 and $179 respectively. The pricing and performance is designed to target NVIDIA’s GeForce GTX 460. Barts is 30% smaller than the GF104 chip used in the GTX 460 and consumes less power. That means it has a cost advantage in production, and board partners can chose a quieter and cheaper cooling solution.  Higher performance at a lower price is a strategy that has served AMD well in the CPU market.

AMD thinks supply should be adequate, with "tens of thousands" of GPUs shipped to board partners such as ASUS, Gigabyte, and Sapphire.

Video cards using Barts were originally going to be known as the Radeon HD 6700 series, but AMD has decided to continue on with the Radeon HD 5700 series as it is. Our sources tell us that there will be no rebranding, but that the 5700 series is a top seller and fits in its price category very well. The 5800 series, on the other hand, has been deemed too costly and will be discontinued by the end of the year.

Radeon HD 6970 and 6950 video cards using Cayman GPUs with much higher performance will be introduced next month. That will be followed up by Antilles, which will bring two Cayman GPUs together for the Radeon HD 6990.






 

Radeon HD 6870

Radeon HD 6850

GTX 460  1 GB

GTX 460   768 MB

Radeon HD 5870

Radeon HD 5850

Radeon HD 5770

Radeon HD 5750

Stream Processors

1120

960

336

336

1600

1440

800

720

Texture Units

56

48

56

56

80

72

40

36

ROPs

32

32

32

24

32

32

16

16

Core Clock

900MHz

775MHz

675 MHz

675 MHz

850MHz

725MHz

850MHz

700MHz

Memory Clock

1.05 GHz (4.2GHz data rate) GDDR5

1GHz (4.0GHz data rate) GDDR5

900MHz (3.6GHz data rate) GDDR5

900MHz (3.6GHz data rate) GDDR5

1.2GHz (4.8GHz data rate) GDDR5

1GHz (4.0GHz data rate) GDDR5

1.2GHz (4.8GHz data rate) GDDR5

1.15GHz (4.6GHz data rate) GDDR5

Memory Bus Width

256-bit

256-bit

256-bit

192-bit

256-bit

256-bit

128-bit

128-bit

Frame Buffer

1GB

1GB

1GB

768 MB

1GB

1GB

1GB

1GB

Transistor Count

1.7B

1.7B

1.95B

1.95B

2.15B

2.15B

1.04B

1.04B

TDP

151W

127W

160 W

160 W

188W

151W

108W

86W

Idle

19 W

19 W

30 W

30 W

27 W

27 W

18 W

16 W

Plugs

2x 6-pin

1x 6-pin

2x 6-pin

2x 6-pin

2x 6-pin

2x 6-pin

1x 6-pin

1x 6-pin

Die Size

255mm2

255mm2

368 mm2

368 mm2

334mm2

334mm2

166mm2

166mm2

Price Point

$239

$179

$229

$199

$379

$259

$149

$129  

 

 



Comments     Threshold


This article is over a month old, voting and posting comments is disabled

RE: wait for the 6970
By inighthawki on 10/22/2010 12:04:01 AM , Rating: 3
They already have extensive testing up on andandtech. The 6870 is faster than the 5850 but slower than the 5870 on every benchmark I saw. The 6850 is also faster than the 460 at the same price range, and uses less power, but they did put out a bit more heat than the 460, which was somewhat surprising. Overall seems like a good card, just confusing why they named it what they did.


RE: wait for the 6970
By Belard on 10/22/2010 1:35:04 AM , Rating: 4
But we must gather that when comparing performance of these cards to the GF460, we are referring to the much faster 1GB version...?

This was easily an Nvidia marketing scam to call the two GF460 the same name. They could have gone with GF460 and GF455 or GTX460 vs GT460... so instead, some customers will buy the cheaper 460 and think they're getting the great performance they are hearing about.


RE: wait for the 6970
By inighthawki on 10/22/2010 1:48:02 AM , Rating: 2
quote:
But we must gather that when comparing performance of these cards to the GF460, we are referring to the much faster 1GB version...?

We are indeed, have a see for yourself:
http://www.anandtech.com/show/3987/amds-radeon-687...
With the exception of the OC'd EVGA 460, the 6850 and 6870 both outperform the standard 1GB 460.


RE: wait for the 6970
By B3an on 10/24/2010 5:23:10 PM , Rating: 2
But from all the places i shop at online the OC'ed EVGA FTW (and similarly clocked 460's, infact most 460 on sale are OC'ed) are the same price or cheaper than the 6870 now that NV have made price cuts. And from the reviews the OC'ed EVGA 460 is also slightly faster.


RE: wait for the 6970
By sviola on 10/22/2010 9:28:26 AM , Rating: 2
Well, the 460 is priced lower now (the 1 GB is at 199 while the 6870 is priced at around $240)


RE: wait for the 6970
By inighthawki on 10/22/2010 1:56:40 PM , Rating: 2
Yes, but the 6850 is ALSO better than the 460 1GB version in all the benchmarks and is only $180.


RE: wait for the 6970
By MrTeal on 10/22/2010 12:57:48 PM , Rating: 2
quote:
The 6850 is also faster than the 460 at the same price range, and uses less power, but they did put out a bit more heat than the 460, which was somewhat surprising.


Putting out heat and having high temperatures are two different things. The new cards do put out less heat, but they likely use a smaller heatsink and because of that the load temperatures are higher. Unless you plan to overclock or the load temperature is so high you can boil water on the die like some recent nVIDIA parts, having a higher load temp won't hurt anything.

I am surprised that the 6870 is so much louder than the 460 though. They must have really cheaped out with a little banshee of a fan.


"Nowadays, security guys break the Mac every single day. Every single day, they come out with a total exploit, your machine can be taken over totally. I dare anybody to do that once a month on the Windows machine." -- Bill Gates














botimage
Copyright 2014 DailyTech LLC. - RSS Feed | Advertise | About Us | Ethics | FAQ | Terms, Conditions & Privacy Information | Kristopher Kubicki