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We normally use the Sapphire TriXX overclocking software for our reviews, but this launch was slightly rushed and Sapphire didn’t have a version ready to support the HD7770 when we started these tests. We therefore reverted to AMD’s Catalyst Control Center.
The Sapphire card is supplied in such a heavily overclocked state that we weren't expecting miracles in Catalyst Control Center. To be fair, we managed to push it another 5 percent on the core, to 1210mhz. The memory overclocked very well, to 1350mhz (5400mhz effective), translating to a 8 percent increase.
The additional overclock doesn't boost performance significantly, adding around 200 points to the overall figure. 4,000+ points is very healthy for a card in this price range.
Good card, but I cant help but feel this range of cards from AMD is rather dull and lifeless. why remove alot of the shaders on the cards? makes no sense to go back a step. negates the gains from the manufacturing process and increasing the clock speeds
Very dull launch day, they need to drop the prices.
Sapphire always do good coolers, but id love to know who in AMD thought it was a good idea to lose 140 stream processors on the new card? the HD6770 had 800 !
Crossfire performance is really good. id like to see results from two of the OC’d models.
great cooler, but the card undeneath hasn’t hit the spot im afraid.
I can’t see anybody in the UK listing a Sapphire SKU with 1150Mhz Core clock…
see Scan/Dabs have a 1120 listed…
Hi Muppett, you aren’t the first person to ask me about this, and ive contacted Sapphire today and they told me that SCAN have the core clock speed listed at the older speeds. It should be 1150mhz. you will hopefully see this change on SCAN Shortly.
Thanks for letting us know.
See this for more information http://www.futurehardware.com/latest-tech-news/737.htm
This card works best underclocked if you have a clocked version, some of the overclocked 7770’s have an odd issue that causes your screen to flicker. Performance wise its a good mid/entry range card but a complete failure from the 6000 series. One thing does stand out about the 7000 series though, their using better cooling which would be a nice addage if only the prices would drop.
@Frank I would guess it has to do with the dye shrinkage from 40nm scale to 28nm, I would have settled for a thousand stream processors if it meant abandoning such a useless shrinkage. My guess they shrunk the dye in order to control heat and leverage power out put. Which is just piss poor marketing strategy if you ask me.