77xx and 78xx series

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Jon55

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Just came across an article on the 77xx and 78xx series, link here. Quote:

AMD_Roadmap_7750_7770.jpg



Coming up first will be the boards targeting the $99-159 price tag, both based on a GPU chip codenamed "Cape Verde". Cape Verde Pro will become AMD Radeon HD 7750 1GB, while Cape Verde XT will become Radeon HD 7770 1GB or 2GB on February 15, 2012.

For those paying attention, Cape Verde Pro and XT carry 128-bit memory interface, but there will be odd combinations such as half-height HD7750 with 64-bit interface and odd amount of memory, such as 512MB DDR3 for special market projects.

AMD-sanctioned boards will utilize 1GB of DDR3 or GDDR5 memory, while the custom boards will vary from 512MB to 2GB and we would even wager a 4GB DDR3 board from one of Chinese vendors by Computex timeframe (as a way of raising product's price).

Following the launch of Radeon HD 7750 and HD 7770, AMD plans to unveil Pitcairn, its $179-249 targeted GPU board for performance consumers. Pitcairn will get the name Radeon HD 7850 (Pitcairn Pro) and HD 7870 (Pitcairn XT). Pitcairn Pro and XT both carry the 256-bit memory controller, keeping the performance envelope in check, on the level of former high-end Radeon HD 6950 and HD 6970 at a new price point. The launch date is set for March 6, 2012 as the first day of CeBIT 2012 trade show in Hannover, Germany.

Remember that due to AMD Fusion APU i.e. Heterogeneous System Architecture (former Fusion System Architecture), AMD is no longer making dedicated chips from the x100, x200, x300, x400, x500 and now, x600 architectures. Radeon HD 7100/7200/7300/7400/7500/7600 are all based on older Evergreen (VLIW5) and Northern Islands (VLIW4) GPU architectures and either embedded inside the APU chips, or rebranded old generations.

Expect the same trend to continue going forward with the 8000 and 9000 generations, while there is a rebrand coming for the 10000 series, which won't see the light of the day in the five figure form.
Click to expand...
 
Saw that earlier. What does "PRC only" mean there - they are going to keep making 6xxx cards just to sell there? Or that's where they are going to dump all the ones that don't get sold? Or is it a different PRC?
 
Too bad the graph isn't laid out according to price or performance segments, I'm still wondering whether the 7770 is going to be faster or slower than a 6850.
 
nice that more are coming in about two weeks but we have to wait a month for Pitcairn. Those are the ones most people here will get (if any of the new Radeons)
 
It's nice to see the x7xx series improving. The low-mid range sector has seemed weak for a couple of generations.
 
Forceman said:
Saw that earlier. What does "PRC only" mean there - they are going to keep making 6xxx cards just to sell there? Or that's where they are going to dump all the ones that don't get sold? Or is it a different PRC?
Click to expand...

My guess would be People's Republic of China, i.e. MSI would continue selling 6800 only in China market.
 
Saw some sites say hd 7770 comes out feb 15 for 150$ 1gb of ram... if theres a 2gb model
it'll cost more. 896 Stream Processors

near 6850 performance.... :/

http://wccftech.com/amd-launching-r...n-xtpro-february-2012-pricing-specs-detailed/

HD 7870 1408 stream processors .... for 299$ 2gb

and hd 7850 for 200$ ....

The low end doesn't seem to move much in performance ... i think the sweet spot will be the hd 7850
Performance / value ratio ...well as long as they keeps 256bit memory for it and 2gb.

Better start saving up ;P

Still won't help ppl with 6950/ gtx480 and above cards wanting to upgrade and not pay 400$ + :p

7990 to be 850$ :p see guys 450$ is nothing! :rolleyes:
 
Let's see if the 7950 at 800mhz and 1792 stream processors is roughly 82% faster than a 6850 at 1920x1200, then with perfect scaling a 7770 at 800mhz and half the processors should be actually slower; if the stock clock sits at 900MHz instead then it would be around 3% faster.

This is all in an ideal world with perfect scaling; it doesn't take into account the overclocking potential shown by these cards tho.

If that happens and the price stays the same then i will just sit tight waiting for competition. I mean, sure, the price is great for someone looking for a new vidcard coming from something old, but to jump from 1 gen to the next it may not be worth it at current prices from a bang/buck deal (much better to go crossfire if you think that you can deal with the possible issues of multiple gpus).
 
Pure speculation, but the middle of the line cards will drop when nvidia finally gets in the mix.

A lot of people are assuming the 7950 will will drop to around $399 once this happens. Possibly lower.
 
HD 7870 1408 stream processors .... for 299$ 2gb
Click to expand...

There's no point in this at all, it probably barely edges out a 6950... not to mention unlocking the 6950.
 
Never been a fan of newer generation cards that perform the same for the same price as previous
generation. Seems counterintuitive ...
 
anyone know if the 7770 will need a 6pin power adapter? I'm hoping for the day when theres a 2GB gpu with no need for added power
 
dook43 said:
There's no point in this at all, it probably barely edges out a 6950... not to mention unlocking the 6950.
Click to expand...

Not flaming or anything, but, how did you come to this conclusion? MSI's roadmap only shows market segmentation position, not price or performance relative to the previous generation. This means that the new MSI 78xx cards will be in the "High Performance" category, instead of the "Performance Mainstream" one, to make room for the continuing sale of the 68xx cards.

I feel that the 78xx cards will perform similarly (±10%) to the 6900s (if a 7930 is not made):
7890 > 6970
7870 = 6970
7850 > 6950
 
7870 as 128 steam processors more , clocked higher but some 6950 unlock to 6970 speed .... for 50$ less....
 
Almost wonder if the 78xx are just 69xx die shrunk heh.... Especially considering the price point...
 
hmm rats on teh 6pin req time for a bigger htpc case and psu
 
Hotthree said:
Pure speculation, but the middle of the line cards will drop when nvidia finally gets in the mix.
Click to expand...

Irony. Kettle meet Pot or vice-versa. However that expression goes :). I hear you speculating ;) that the middle of the line cards will drop when nVidia finally gets into the mix, but, likely it'll be sooner than when nVidia decides to release their 6xx card. If its ready, they don't really gain much by 'not' releasing it if it can potentially kill some of nVidia's sales while making sales//profit for themselves. The idea they will wait for nVidia is a bit laughable only when you consider what happened with the last die process shrink.

Anyone remember the 5870 versus 480 white paper, wood screw, fake, more fakes, more fakes, fiasco where the 480 came out almost 7 months later? I HOPE we won't be waiting that long for the 680 series to come from nVidia. I really really hope so but can't keep my hope that high given it wasn't that long ago that nVidia was far behind, it happened during a die shrink and nVidia wouldn't release any performance stats back then. Hey, wait a sec. Pretty much all three of those things apply to current day nVidia but I won't speculate and say they are going to be really late to join the generation. :). Not yet hehe.

In any case, I think nVidia being late is a bit more likely than ATI deciding to keep its mid-range charges on ice for no reason other than to give time for nVidia to catch up even if it cost them sales and made sales for their competitor. Besides, if ATI did wait to release the mid-range line of cards or had done so in the 5xxx generation, they would have ended up waiting 7 months.
 
JMccovery said:
Not flaming or anything, but, how did you come to this conclusion? MSI's roadmap only shows market segmentation position, not price or performance relative to the previous generation. This means that the new MSI 78xx cards will be in the "High Performance" category, instead of the "Performance Mainstream" one, to make room for the continuing sale of the 68xx cards.

I feel that the 78xx cards will perform similarly (±10%) to the 6900s (if a 7930 is not made):
7890 > 6970
7870 = 6970
7850 > 6950
Click to expand...

http://hardforum.com/showthread.php?t=1661366
+
http://www.techpowerup.com/reviews/AMD/HD_7950/27.html

7950@800MHz and 1792 stream processors = 33% faster than the 6950 in average at 1920x1200, so a 7870 @950MHz and 1408 stream processors would be:

1.3333*(950*1408)/(800*1792) = 25% faster... with the drop of the stock clocks of the 7950 to 800 (it was 900 on the leaks), then i would say that it is safe to assume that they will drop most other clocks to keep a semblance of market segregation.

At 800MHz it would only be 5% faster, so 850-900 would be my guess.
 
Read some where they took a 7950 + bios flashed to 7970 + oc ... sure it doesn t unlock the locked shaders but you get 7970
performance...
 
stupid question...I know the 77xx series is suppose to be pci-e 3.0, which is backwards compatible with 2.0. But if you put it in a 2.0, how much slower does it get?
 
likenew said:
stupid question...I know the 77xx series is suppose to be pci-e 3.0, which is backwards compatible with 2.0. But if you put it in a 2.0, how much slower does it get?
Click to expand...

None. No card today needs Pci3 bandwidth for gaming. It's just a feature checkbox for people to upgrade to newer platforms.
 
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