AMD Radeon HD 7750 & Radeon HD 7770 GHz Edition Review: Evading The Price/Performance Curve
by Ryan Smith & Ganesh T S on February 15, 2012 12:01 AM EST- Posted in
- GPUs
- AMD
- HTPC
- GCN
- Radeon HD 7000
Meet the Radeon HD 7770 GHz Edition
The second card launching today is the Radeon HD 7770 GHz Edition. Compared to the 7750 it’s based on a fully enabled Cape Verde GPU and features a higher core clock of 1GHz, versus 800MHz on the 7750.
Starting as always with the cooler, for the reference 7770 AMD has gone with something that is best described as half of a blower. The shroud is completely enclosed on the sides, but due to the position of the fan the card exhausts hot air out of both the front and the rear of the card, which is something that’s common for dual-GPU cards such as the 6990 but atypical for a midrange video card. Heat transfer is provided by a basic black aluminum heatsink, while the fan is embedded in the middle of the heatsink.
As for the card itself, it’s effectively an extended version of the 7750. Like the 7750 the card is equipped with 4 256MB 5GHz Hynix GDDR5 RAM chips, along with some additional VRM circuitry to handle the higher 100W power limit for this board. External power is provided by a single 6pin PCIe power socket, while at the top of the card there is a single CrossFire connector. This is actually down from 2 connectors on the 5700 series, which comes as no great surprise as virtually no one ever used tri-CF with the 5700 series in the first place. Overall the card is 8.25” long with no notable shroud overhang, making it the same length as the 5770’s PCB.
Meanwhile for display connectivity AMD is using the same configuration as we’ve seen on the 7900 series: 1 DL-DVI port, 1 HDMI port, and 2 miniDP ports. Unlike the 7900 series AMD’s not requiring their partners to include any adaptors, so buyers with 2 DVI monitors will almost always be on their own. The presence of 2 miniDP ports means that the 7770 has quite a bit of flexibility in driving various displays, however as with the 7900 series if you want to drive more than 4 displays you will need a MST hub, the release of which is still some time off.
As for partner cards, as with the 7750 all of AMD’s partners are doing their own thing. No one will be using AMD’s reference cooler, though PowerColor in particular will be using a cooler similar to it. Everyone else will be using their own double-wide coolers, most of which will be open air as we typically see in this market segment. Like the 7900 series AMD is relying on the 7770 having some degree of overclockability, so there will be a number of factory overclocked cards taking advantage of this.
Finally, I wanted to quickly touch on the naming of the 7770. The official name of the 7770 is the Radeon HD 7770 GHz Edition; with the last bit being AMD’s latest marketing push. Starting with the 7770, AMD is going to be branding every card with a reference clock at or above 1GHz as a “GHz Edition” card to capitalize on the fact that they’ve hit 1GHz. Thus in spite of what the name implies there won’t be a 7770 non-GHz Edition card, as it’s a tagline rather than a true suffix necessary to differentiate cards.
With that said, while hitting 1GHz on a GPU is a notable accomplishment for AMD and should not be ignored, it’s not going to be particularly important in the grand scheme of things. The embarrassingly parallel nature of rendering means that GPU performance isn’t nearly as tied to clockspeeds as CPU performance is, as you can always lay down more functional units to improve performance. Clockspeeds do need to go up over time due to the limited parallelization of the command processor, but otherwise GPU performance has never been heavily dependent on clockspeeds.
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chizow - Sunday, February 19, 2012 - link
Those who do not learn from history are doomed to repeat it.There's a reason we look at the past, because chances are, what's already in your rig performs the same or better than what AMD is trying to sell you at the same or higher price than what you paid "in the past".
Everyone needs to set the bar for themselves in terms of what they are willing to pay for an "upgrade", and given there is negative scaling with these parts, its pretty obvious they fail on all fronts. But hey, even you acknowledge this.
Galidou - Tuesday, February 21, 2012 - link
Those with a choosen side should not try to explain whatever the history tells us because they have a biased opinion. They can't see both side of the medal as objectively possible as someone with an impartial view and form the beginning you've proven to be on nvidia's side.End of the discussion, you can try to explain history but it's YOUR perception. I never said history wasn't worthy of anything the thing is you always are on the same side which means it's worthless from the very beginning.
Galidou - Tuesday, February 21, 2012 - link
I do not think it's a TOTAL fail, the 7970 and 7950 isn'T very well priced, but it's not a fail like those. From your point of view a fail is from historical pricing. From my point of view and ALWAYS was like that, it's from a performance/price standpoint and I won't change because you tell me we should look at everything things from the past. Sure we can learn from it.There was once a man that beleived the earth was round. But the historians and everyone else beleive it was flat so they killed him. No need to put names in there... History used as an argument makes that sometimes.... You've got to renew your point of view else, you can't see further from what you know.
AMD is trying to sell you at the same or higher price than what you paid "in the past".
Like we said before, nothing new here, it's always the same with x2 parts from last gen for years now... And it's only an example from many others of rebranding older designs selling at higher price point which AMD and Nvidia are both strong at.
Galidou - Sunday, February 19, 2012 - link
The price is a failure from my perception, 7770 and 7750 is a big fail..... Unlike 7950 and 7970 non-attractive price/performance but still a little justified by it's performance compared to parts that are out NOW and not compared to freaking history of pricing or future video cards...People out there will buy the 7770 and they'll be totally satisfied for as long as they'll own the thing. If you spent 4 hours on the internet looking at video card prices and benchmarks and realize you're way better off with a 6850 you might find it a bargain. But for others, if you tell them what you did to get to that conclusion, they'll maybe end up being happy with their choice without searching because they had 4 hours of playtime outside on a sunny day and that's worth it, while you're on the computer looking to spend your money on the best you can find.
So in the end, whatever we might say, perception is the key in life, we can take a whole day speaking about that and in the end, everyone will be right, because each of us create it's reality by thinking and seeing it the way THEY want... You want to live in the past and the future analyzing everything, you'll end up loosing the present which is the only thing that exists...
chizow - Sunday, February 19, 2012 - link
Yes Rarson, its proof stupid people have low standards and will buy anything. How's your 7700 treating you?Plenty in stock actually: http://www.newegg.com/Product/ProductList.aspx?Sub...