4 chips in 6 months.

This is the schedule AMD’s GPU engineering teams committed themselves to for the launch of the Evergreen family. The entire family from top to bottom would be launched in a 6 month period.

Last month AMD took the first step of that plan with the launch of Cypress, the forebear of the family and the source of the Radeon HD 5870 and 5850. Today AMD is taking the next step in the launch of the Evergreen family by delivering the 2nd and final Evergreen chip of the year: Juniper. Or as the products based off of them are known as, the Radeon HD 5770 and 5750.

  ATI Radeon HD 5870 ATI Radeon HD 5850 ATI Radeon HD 5770 ATI Radeon HD 5750
ATI Radeon HD 4870
ATI Radeon HD 4850
Stream Processors 1600 1440 800 720 800 800
Texture Units 80 72 40 36 40 40
ROPs 32 32 16 16 16 16
Core Clock 850MHz 725MHz 850MHz 700MHz 750MHz 625MHz
Memory Clock 1.2GHz (4.8GHz data rate) GDDR5 1GHz (4GHz data rate) GDDR5 1.2GHz (4.8GHz data rate) GDDR5 1.15GHz (4.6GHz data rate) GDDR5 900MHz (3600MHz data rate) GDDR5 993MHz (1986MHz data rate) GDDR3
Memory Bus Width 256-bit 256-bit 128-bit 128-bit 256-bit 256-bit
Frame Buffer 1GB 1GB 1GB 1GB / 512MB 1GB 1GB / 512MB
Transistor Count 2.15B 2.15B 1.04B 1.04B 956M 956M
TDP 188W 151W 108W 86W 150W 110W
Manufacturing Process TSMC 40nm TSMC 40nm TSMC 40nm TSMC 40nm TSMC 55nm TSMC 55nm
Price Point $379 $259 $159 $129 / $109 $140-$160 $109-$129

In our 5800 series launch article, we briefly discussed Juniper and the other members of the Evergreen family. With Cypress a bit too big and a bit too expensive to hit mainstream prices, a new chip was introduced in to AMD’s usual 3 chip stack to cover that segment of the market, and that chip was Juniper.

What’s Juniper? In a nutshell, it’s all of Cypress’ features with half the functional units (and no Double Precision for you scientist types). DirectX 11, Eyefinity, angle-independent anisotropic filtering, HDMI bitstreaming, and supersample anti-aliasing are all accounted for. For more information on these features, please see our Radeon 5870 launch article from last month.

With half of the functional units left behind, we’re left with 10 SIMDs, giving us 800 stream processors and 40 texture units, while the ROP count has also been cut in half to 16, in turn giving us a 128-bit memory bus. If Cypress was 2 RV770s put together, then Juniper is the closest thing you’re going to see to RV770 coming out of the Evergreen family.


Juniper

With the reduction in functional units, Juniper becomes a leaner and meaner core. The transistor count is 1.04 billion, a little less than half of Cypress and about 100 million more than RV770. The die size of this resulting core is 166mm2, significantly less than both Cypress and RV770, the latter due to the smaller process size. RV770 for comparison was 260mm2.

From Juniper we are getting the 5770 and the 5750. The 5770 is a full Juniper, with all of Juniper’s functional units enabled and the card running at what amounts to a full speed of 850MHz (the same as 5850). The 5750 is slightly cut down, much like 5850 is compared to 5870. Here we have 1 SIMD disabled, and the core clock reduced to 700MHz. This is a notable departure from how AMD handled the 4870/4850 split, where 4850 was differentiated using a slightly slower core and much slower RAM, without the need to disable any SIMDs.

The smaller Juniper core also affords these cards lower power usage than the 5800 series. The 5770 is 108W at load and 18W at idle, meanwhile the 5750 is 86W at load and 16W at idle.

As an interesting aside, when AMD started sampling Evergreen cards to game development houses and other 3rd parties, they were Juniper based, and not Cypress based. The Juniper team was rather proud of this, particularly since Juniper came back from TSMC second. They also had less time to get their GPU up and working than the Cypress team did, since they had to wait on Cypress before being able to finish work on some elements. This is what makes AMD’s 6 month rollout all the more impressive, since it means the non-Cypress teams had less time to get their work done than they have in previous product cycles.

Meet The 5770
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  • papapapapapapapababy - Saturday, October 17, 2009 - link

    http://ht4u.net/reviews/2009/amd_ati_radeon_hd_570...">http://ht4u.net/reviews/2009/amd_ati_radeon_hd_570...

    use babel
    Reply
  • Zool - Wednesday, October 14, 2009 - link

    The 5700 series have the same improved adaptive antialiasing with shaders like the 5800 series ?
    There could be a antialiasing graph with diferent resoutions and antialiasing types for each card in reviews.
    Reply
  • RDaneel - Wednesday, October 14, 2009 - link

    I may be in the minority, but I've already ordered a 5750. For a SOHO box used for only occasional gaming, it was the most future-proofed option (DX11) that also has low enough idle draw that it actually will save me enough money over the life of the card to justify any price difference with a 48xx card. Would I have loved 10% more performance, sure, but this isn't a bad blend of efficiency and longevity. Reply
  • yacoub - Wednesday, October 14, 2009 - link

    imho, it's perfect for that situation.

    Those of us who have a gaming PC with a DX10 card in it are the ones who find this 5700 series less than stellar.
    Reply
  • ET - Thursday, October 15, 2009 - link

    But those of us that have a mid-range PC with yesteryear's DX10 card (3870) find it appealing. :) Reply
  • SantaAna12 - Wednesday, October 14, 2009 - link

    are you filtering out comments these days? Reply
  • SantaAna12 - Wednesday, October 14, 2009 - link

    what up AT?
    ive been lookin at your recent AMD rants, and its getting tiresome. They paying u the big bucks these days? when you only compare AMD cards against AMD cards you are doing your site a disservice. When you show CF but no SLI you are showing me a new AT.

    I have expected more in the past. You goin the route of TOMS?

    Reply
  • Ryan Smith - Wednesday, October 14, 2009 - link

    As we noted in the article, the CF configuration is mostly for academic reasons. I don't seriously expect anyone to pick it over a single card.

    Anyhow, what would you like to see? I have the SLI data for the 275 and the 285, but since we've already established that the 260C216 is faster than the 5770, it won't really tell you anything useful.
    Reply
  • just4U - Wednesday, October 14, 2009 - link

    "NVIDIA would need to shave the price down to justify its purchase once more (something they have not done on the GTX series in response to the 5870 and 5850)."

    ------------------

    I'd like to comment on this for just a moment. Where I live we haven't seen much stock on the new dx11 cards yet.. however, Suddenly there's a slew of highly priced 295's and other top end Nvidia products that these stores were not stocking.

    My bet is that .. people walking in and making a purchase find out that they can't get that coveted new DX11 card so they opt out for one of those. So in a sense Nvidia would be riding on the coattails of Ati's new popular line that .. just doesn't have the availability. They haven't had to lower prices yet because they may be benifiting by the lack of stocked cards.

    Make sense?
    Reply
  • Ananke - Wednesday, October 14, 2009 - link

    No, it doesn't make sense :)
    Why would you spent 3-400 for something that you don't want at first place? Why just not keep your money until you actually can buy what you want? We are not talking about 10 bucks, it is way bigger chunk...
    Reply

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