AMD's Radeon HD 5870: Bringing About the Next Generation Of GPUs
by Ryan Smith on September 23, 2009 9:00 AM EST- Posted in
- GPUs
Meet the Rest of the Evergreen Family
Somewhere on the way to Cypress, AMD’s small die strategy got slightly off-track.
AMD’s small-die strategy for RV770
Cypress is 334mm2, compared to 260mm2 for RV770. In that space they can pack 2.15 billion transistors, versus 956 million on the RV770, and come out at a load power of 188W versus 160W on the RV770. AMD called 256mm2 their sweet spot for the small die strategy, and Cypress missed that sweet spot.
The cost of missing the sweet spot is that by missing the size, they’re missing the price. The Cypress cards are $379 and $259, compared to $299 and $199 that the original small die strategy dictated. This has resulted in a hole in the Evergreen family, which is why we’re going to see one more member than usual.
As Cypress is the base chip, there are 4 designs and 3 different chips that will be derived from it. Above Cypress is Hemlock, which will be the requisite X2 part using a pair of Cypress cores. Hemlock is going to be interesting to watch not just for its performance, but because by missing their sweet spot, AMD is running a bit hot. A literal pair of 5870s is 376W, which is well over the 300W limit of a 6-pin + 8-pin power configuration. AMD saves some power in a single card (which is how they got the 4870 under the limit) but it likely won’t be enough. We’ll be keeping an eye on this matter to see what AMD ends up doing to get Hemlock out the door at the right power load. As scheduled we should see Hemlock before the end of the year, although given the supply problems for Cypress that we mentioned earlier, it’s going to be close.
The “new” member of the Evergreen family is Juniper, a part born out of the fact that Cypress was too big. Juniper is the part that’s going to let AMD compete in the <$200 category that the 4850 was launched in. It’s going to be a cut-down version of Cypress, and we know from AMD’s simulation testing that it’s going to be a 14 SIMD part. We would wager that it’s going to lose some ROPs too. As AMD does not believe they’re particularly bandwidth limited at this time with GDDR5, we wouldn’t be surprised to see a smaller bus too (perhaps 192bit?). Juniper based cards are expected in the November timeframe.
Finally at the bottom we have Redwood and Cedar, the Evergreen family’s compliments to RV710 and RV730. These will be the low-end parts derived from Cypress, and will launch in Q1 of 2010. All told, AMD will be launching 4 chips in less than 6 months, giving them a top-to-bottom range of DX11 parts. The launch of 4 chips in such a short time frame is something their engineering staff is very proud of.
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ilnot1 - Wednesday, September 23, 2009 - link
In fact, going by the lowest Newegg prices, this is how the top setups would stack up today:5870 CF .......= $760
GTX 285 SLI .= $592
GTX 295 .......= $470
GTX 275 SLI .= $420
5870 ............= $380
4890 CF ........= $360
4870 X2 ........= $330
This would make the 4890 CF or the 275 SLI setups the best value. And yes I realize there will be availability issues and price adjustments over the next month or so.
DominionSeraph - Thursday, September 24, 2009 - link
you forgot:4870 CF: $260-280
and how about the $180 4850 CF, which is probably the best price/performance for sub-1920x1200 gaming. http://www.anandtech.com/video/showdoc.aspx?i=3517...">http://www.anandtech.com/video/showdoc.aspx?i=3517... You can even get 1GB versions for ~$190.
ilnot1 - Wednesday, September 23, 2009 - link
Another very good review, thanks.But piggy backing on what wicko said, I'm surprised you didn't include two 4890 in CF. Seeing as how you can get two 4890 for less than a 5870 (whenever they are actually available). $180 x 2 = $360 < $379. And this from Newegg, not some super special sale price.
http://www.newegg.com/Product/Product.aspx?Item=N8...">http://www.newegg.com/Product/Product.aspx?Item=N8...
Ryan Smith - Wednesday, September 23, 2009 - link
It's something we would have included if we had the cards. I don't have 2 4890s, and we couldn't get a second one in time.AnotherGuy - Wednesday, September 23, 2009 - link
as always anandtech roxnbjsl2000 - Wednesday, September 23, 2009 - link
Finally time to upgrade..SiliconDoc - Wednesday, September 23, 2009 - link
Not only all that, but when there were 13 big titles for PhysX and a hundred smaller ones, we were told here, "Meh", who needs it.Now, we have a papery and unavailable (egg)except by pre-order(tiger) 5870 launch, a not-existing 5850, with guess what ? NO DX11 games!
Oh wait, there is actually just ONE - see page 7 of review. LOL
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Conclusion ?: " It looks like NO(err.. just one) DX11 games ready, so... it also looks like NVidia is launching at the right time, and ATI blew their dry unimpressive wad on a piece of paper porn. "
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Gee no one crowing about the first DX11 card... imagine that...
Good thing , too, considering how 13 big or a hundred titles small of PhysX enhanced games was "nothing to change one's purchase decision over". At least Anand got addicted to Mirror's Edge with PhysX enabled before concluding in the article "meh" this PhysX thing is ok if you like this game, but who cares...
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Now we have the DX11 pre DX11 games launch with a paper product, so crowing about it wouldn't be too fitting, huh.
monomer - Wednesday, September 23, 2009 - link
Why would a developer would release a DX11 game before DX11 is even available?SiliconDoc - Friday, September 25, 2009 - link
Why would a developer release a DX11 card before DX11 is even available ?(I suppose you'll have to unscrew your hate nvidia foil cap, and grind in the red spikes in it's place to answer that one.)
However, allow me, instead.
1.I have been running windows 7 32&64 for quite some time now, not sure why you haven't been.
2. Battleforge, an ATI promo game, as noted in the review, has released their DX11 patch, hence, with W7 from MSFT (the beta+ free trial good till March 1st 2010 or something like that) I believe any gamer has had a reasonable chance to preview DX11.
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So anyway...
cactusdog - Friday, September 25, 2009 - link
Ya , ATI has done it again. Excellent performance for a fair price. If Nvidia released this exact card it would be $150-$200 more expensive.LOL, Nvidia sales are gonna be slow for a while.