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[TS] AMD Radeon HD 7770 & Radeon HD 7750 Review - Page 6

post #51 of 155
These are a far cry from the awesomeness that was the 5770 on launch. mad.gif
 
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post #52 of 155
Quote:
Originally Posted by jrbroad77 View Post

6770 was only a 5770 rebrand because 32nm TSMC was cancelled.
Wrong, only 69xx was going to be 32nm.

Pretty disappointed. Was really hoping for more than 640 SPs, but oh well. When the price drops, it'll be a great card, but right now it's pretty lame.

The 7750 looks great on the other hand. It's pretty close to the 5770 for around the same price (costing slightly less, depending on deals) but looks like it'll overclock much better (using a real cooler, not AMD's cheap-o coolers) all while supporting DX11.1 and consuming a ton less power. I think I found the card that will be going into my brother's computer.
Edited by Homeles - 2/15/12 at 7:15am
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post #53 of 155
I find it sad that this card barely outperforms my ancient 4870 1 gb. While the power consumption is amazing I for one could care less about power reqs. Based on the 79XX and 77XX releases I am not optimistic about 78XX price/performance. It looks like I may have to wait for kepler to make things more reasonable. *crosses fingers*
 
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post #54 of 155
Quote:
Originally Posted by Homeles View Post

Wrong. Only 69xx was going to be on 32nm.

Actually, the 68xx and 69xx cards were significant reworks of their 5xxx counterparts. Both were supposed to receive the transition to 32nm. I think the 67xx series was supposed to be a carry over but with a die shrink to reduce power consumption.

If you have a source to back up your claims, I'd love to see it. smile.gif
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post #55 of 155
Quote:
Originally Posted by Biorganic View Post

I find it sad that this card barely outperforms my ancient 4870 1 gb. While the power consumption is amazing I for one could care less about power reqs. Based on the 79XX and 77XX releases I am not optimistic about 78XX price/performance. It looks like I may have to wait for kepler to make things more reasonable. *crosses fingers*

HD 4870 was AMD's G92. Aside from a tesselation tweak and memory bus cut.

HD 4870 -> HD 5770 -> HD 6770
post #56 of 155
Quote:
Originally Posted by Mad Pistol View Post

Actually, the 68xx and 69xx cards were significant reworks of their 5xxx counterparts. Both were supposed to receive the transition to 32nm. I think the 67xx series was supposed to be a carry over but with a die shrink to reduce power consumption.
If you have a source to back up your claims, I'd love to see it. smile.gif

68xx was originally planned to be 32nm, but it was decided that it was uneconomical and was dropped in favor of 40nm. 69xx stayed as a 32nm design until it came apparent that TSMC was cancelling the 32nm node.
Quote:
Originally Posted by Anandtech 
The 32nm predecessor of Barts was among the earlier projects to be sent to 40nm. This was due to the fact that before 32nm was even canceled, TSMC’s pricing was going to make 32nm more expensive per transistor than 40nm, a problem for a mid-range part where AMD has specific margins they’d like to hit. Had Barts been made on the 32nm process as projected, it would have been more expensive to make than on the 40nm process, even though the 32nm version would be smaller. Thus 32nm was uneconomical for gaming GPUs, and Barts was moved to the 40nm process.

Cayman on the other hand was going to be a high-end part. Certainly being uneconomical is undesirable, but high-end parts carry high margins, especially if they can be sold in the professional market as compute products (just ask NVIDIA). As such, while Barts went to 40nm, Cayman’s predecessor stayed on the 32nm process until the very end. The Cayman team did begin planning to move back to 40nm before TSMC officially canceled the 32nm process, but if AMD had a choice at the time they would have rather had Cayman on the 32nm process.
Quote:
Originally Posted by TheBlademaster01 View Post

HD 4870 was AMD's G92. Aside from a tesselation tweak and memory bus cut.
HD 4870 -> HD 5770 -> HD 6770

5770 = 6770

Same card.
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post #57 of 155
While the performance at stock is not what we would like,do not under-estimate the performance of these cards overclocked.1200MHz core will make a big difference.Wish they would have went with the 256-bit bus though.I still think the 6790 is underrated in this market segment.I think the hinted at 7830 will be the budget performance king of the 7 series.
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post #58 of 155
Quote:
Originally Posted by 996gt2 View Post

The HD 7770 is quite a bit slower than a GTX 560 in almost every game Anandtech tested...and GTX 560 can be had in the $150-160 range new.
IMO, prices on the HD 7770 need to drop into the $125 range to make it more competitive. At the $150 price range, the GTX 560 makes much more sense than an HD 7770.

I don't know why you'd bother grabbing a 560 unless you were playing Skyrim exclusively. The 6870 is cheaper and consumes less power. It's literally the king of the hill for price/performance.
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post #59 of 155
Quote:
Originally Posted by Redwoodz View Post

While the performance at stock is not what we would like,do not under-estimate the performance of these cards overclocked.1200MHz core will make a big difference.Wish they would have went with the 256-bit bus though.I still think the 6790 is underrated in this market segment.I think the hinted at 7830 will be the budget performance king of the 7 series.

At this rate, we're not going to have a budget performance king this generation. Even the cards that are mid-budget cards are still priced way too high.

I can't believe I'm rooting for team green on this one, but with current trends in the GPU market, I really hope Nvidia pulls a miracle out with Kepler and brings AMD back down to Earth on pricing.
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post #60 of 155
Power consumption looks good, but the price is not worth it. AMD needs to get the price situation in order for these cards and do it quick.
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