Radeon HD 6790 based on Barts LE with 800 SPs [nordichardware.com]

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Jionix

Senior member
Jan 12, 2011
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The 6790 is going to be dropping shortly, and it's similar in fashion to Barts as the 5830 was similar to Cypress. It looks like salvaged chips from 6870 were used (hense the 2x6 pin power requirements).

It would seem it has a relatively high power draw for it's capabilities, but the price seems good --- ~$130.

http://www.nordichardware.com/news/...n-hd-6790-based-on-barts-le-with-800-sps.html


Please keep thread titles true to their original cited source.

nordichardware did not write what you state in the original thread-title:
AMD's new (and uneccessary) GTX 550ti Killer
Click to expand...

nordichardware wrote the following (which will now be the thread title of this thread):
Radeon HD 6790 based on Barts LE with 800 SPs
Click to expand...

Idontcare
Super Moderator
 
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A

Arkadrel

Diamond Member
Oct 19, 2010
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^-^ this is bound to be alot faster than the 550ti (since thats like only 5% over the 5770).

Im surprised that its memory bandwidth will be ~134.4 GB/s. (the 550ti is ~98 GB/s)

A 6790 at ~135-140$ or so would put the 550ti ~150$ in its place.



Source:
http://tpucdn.com/reviews/ASUS/GeForce_GTX_550_Ti_Direct_Cu/images/power_maximum.gif

550ti power comsumption can peak at ~142watts.

so a 6790 @ under 150 TPD isnt so bad, if it just is faster than the 550ti.
 
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L

Lonyo

Lifer
Aug 10, 2002
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Not all that much slower from the outside look than the 6850. 10% lower GPU power and more memory bandwidth.
Be interesting to see if it can overclock to match the 6850, but based on that power it won't necessarily be a nice choice anyway and it doesn't say anything about price.
And not very nice for OEMs if they want a low power cheapo card.

Definitely a 5830 repeat but maybe without the terrible performance since ROPs haven't been crippled.
 
S

-Slacker-

Golden Member
Feb 24, 2010
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This is bound to drive down prices for the gtx 550, and maybe even for the hd 5770 since, except for a $115 powercolor model, these cards start at $130 before rebate.

2 days away, hell yeah!
 
A

Arkadrel

Diamond Member
Oct 19, 2010
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Looks like its a Harvested Barts chip...

oh well waste not, want not.
Why not use chips if possible... and its bound to be faster than the 550ti, by a good bit.

So it should sell, and the 100-150$ market, is a market thats important, because of the # of sales done there.
 
Avalon

Avalon

Diamond Member
Jul 16, 2001
7,571
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I wonder if there's any chance of shader unlocking, or if that will be laser cut by AMD. I've been interested in a GTX 460 or Radeon 6850, but I'm still paying off my wedding and don't have more than a gift card and some change. Being broke ftw :p
 
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S

-Slacker-

Golden Member
Feb 24, 2010
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What I don't really understand is why are they releasing the card now, 5-6 months after barts hit the market.

It would make sense to release them not too long after barts, because that's when the yields are at their lowest, and there are a lot of broken chips that are just waiting to be sold as a HD xx30 type card.

Whereas now, since the manufacturing process is more mature and yields are much better, I suspect they'll have more trouble harvesting these sub-optimal chips to meet demands, and they may have to intentionally cripple barts chips to make barts LE. Like they do with athlon II x3 and x2.
 
J

Jionix

Senior member
Jan 12, 2011
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-Slacker- said:
What I don't really understand is why are they releasing the card now, 5-6 months after barts hit the market.

It would make sense to release them not too long after barts, because that's when the yields are at their lowest, and there are a lot of broken chips that are just waiting to be sold as a HD xx30 type card.

Whereas now, since the manufacturing process is more mature and yields are much better, I suspect they'll have more trouble harvesting these sub-optimal chips to meet demands, and they may have to intentionally cripple barts chips to make barts LE. Like they do with athlon II x3 and x2.
Click to expand...

I could speculate that AMD had such good yields with Barts that it took them all this time to finally have enough chips for a product release (as in, enough chips to go around for the AIB's).
 
A

Arkadrel

Diamond Member
Oct 19, 2010
3,681
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What I don't really understand is why are they releasing the card now, 5-6 months after barts hit the market.

It would make sense to release them not too long after barts, because that's when the yields are at their lowest, and there are a lot of broken chips that are just waiting to be sold as a HD xx30 type card.

Whereas now, since the manufacturing process is more mature and yields are much better, I suspect they'll have more trouble harvesting these sub-optimal chips to meet demands, and they may have to intentionally cripple barts chips to make barts LE. Like they do with athlon II x3 and x2.
Click to expand...

Maybe they didnt have bad enough yields to make it worth while, and so have been saveing up a pile of bad chips.

now 6months lateron, they have enough to make it worthwhile to make a card out of them?
This atleast seems to make sense for me, more so than doing a imidiate release of the card,... it all depends on how yields look.
 
S

-Slacker-

Golden Member
Feb 24, 2010
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Ah, right. Could be it




Looking at the 32 ROP count, this could be AMD's first decent LE card in a long time.
 
A

Arkadrel

Diamond Member
Oct 19, 2010
3,681
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insurgent said:
I thought the 550 was already dead and didn't need killing :D
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it has like ~5% speed on a 5770, but with a 50% price tag differnce.
99$ card vs 150$ card.

You could argue that it was dead, when released at 150$ vs its performance, but it was still made, and is probably still selling.

Anywhooo.... no harm in makeing a 6790.

if we assume theyre useing chips that didnt pass quality controll, that otherwise would just have been thrown out, its a bonus that theyre makeing a card (profit vs just throwing out).

I wonder how close it ll be to the 460 in performance....


http://www.techpowerup.com/reviews/HIS/Radeon_HD_6850_IceQ_X_Turbo/23.html

perfrel_1920.gif


A stock 6850 is about equal to a 460 1gb, in 1920x1200 resolutions.
 
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J

Jionix

Senior member
Jan 12, 2011
238
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0
I'm gonna need a need card soon, and I was thinking this could almost be it.. But the power requirements are putting me a bit off.

I'll probably wait until the 6770 comes out, which will be a different chip and near 100 watts or less. I think that one is slated for April too..
 
busydude

busydude

Diamond Member
Feb 5, 2010
8,793
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Jionix said:
I'll probably wait until the 6770 comes out, which will be a different chip and near 100 watts or less. I think that one is slated for April too..
Click to expand...

I don't think we will see a 6770.. AMD has no plans to replace 5770 and 5750.
 
A

Arkadrel

Diamond Member
Oct 19, 2010
3,681
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6770 will be a just be a 5770, renamed, and clocked higher.... and probably be OEM only :p
 
busydude

busydude

Diamond Member
Feb 5, 2010
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Jionix said:
Yeah, I see now you're right.. I think I was thinking another card..
Click to expand...

I saw your original post before you edited it out.. anyway that 6770 is just a 5770 with HDMI 1.4 for 3D and only for OEMs. Performance wise there is going to be virtually no difference.

6790 is based on their new VLIW4 based architecture.. it would be interesting to see how it performs against 5770 as they both have same number of SP's.
 
J

Jionix

Senior member
Jan 12, 2011
238
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0
busydude said:
I saw your original post before you edited it out.. anyway that 6770 is just a 5770 with HDMI 1.4 for 3D and only for OEMs. Performance wise there is going to be virtually no difference.
Click to expand...


I was remembering back to the Turks talk a few months ago --- the 6670 specifically, and forgot that the 6770 was simply a rebrand for OEMs
 
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