Today AMD release their new HD7750 and HD7770 series graphics cards targeting the mainstream enthusiast audience. In this review we analyse the Sapphire HD7770 1GHZ Overclock Edition which is supplied resplendent with custom cooling solution.
Sapphire are AMD’s largest partner and over the last year they have been releasing some of the finest graphics cards known to man.
Their HD7950 Overclock Edition was one of the quietest performance cards we have tested to date, and could scale to over 1,200mhz.
In this state it was faster and quieter than the reference clocked HD7970 which cost £100 more.
Unlike VTX3D, Sapphire have taken the reference AMD cooler, ditched it and created their own. They are using a centralised, oversized fan on a blue PCB.
| Product | Sapphire HD7770 1GHZ OC Edition | AMD HD7770 1GHZ |
| Process | 28nm | 28nm |
| Transistors |
1.5 billion
|
1.5 billion |
| Engine Clock |
1,150 mhz
|
1000mhz |
| Stream Processors |
640
|
640 |
| Compute Performance | 1.28 TFLOPS | 1.28 TFLOPS |
| Texture Units | 40 | 40 |
| Texture Filrate | 40.0 GT/s | 40.0 GT/s |
| ROPs | 16 | 16 |
| Pixel Filrate | 16.0 GP/s | 16.0 GP/s |
| Z/Stencil | 64 | 64 |
| Memory Type | 1GB GDDR5 | 1GB GDDR5 |
| Memory Clock | 1,250mhz | 1,125mhz |
| Memory Data Rate | 5.0 Gbps | 4.5 Gbps |
| Memory Bandwidth | 72 GB/s | 72 GB/s |
Sapphire have overclocked the core from 1GHZ to 1,150mhz, and the memory from 1,125mhz (4.5Gbps effective) to 1,250mhz (5.0Gbps effective). Is this the best card on launch day?
Sapphire HD7770 1GHZ Overclock Edition Review,Page : 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21
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February 15, 2012
#1
[...] Radeon HD 7770 & HD 7750 @ Hothardware AMD Radeon HD 7770 & HD 7750 @ Motherboards (XFX) AMD Radeon HD 7770 & HD 7750 @ KitGuru (Sapphire OC) AMD Radeon HD 7770 & HD 7750 @ [...]
February 15, 2012
#2
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
February 15, 2012
#3
Very dull launch day, they need to drop the prices.
February 15, 2012
#4
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 !
February 15, 2012
#5
Crossfire performance is really good. id like to see results from two of the OC’d models.
February 15, 2012
#6
great cooler, but the card undeneath hasn’t hit the spot im afraid.
February 15, 2012
#7
[...] techpowerup anandtech guru3d Legitreviews techreport tomshardware hothardware hardocp kitguru [...]
February 15, 2012
#8
I can’t see anybody in the UK listing a Sapphire SKU with 1150Mhz Core clock…
see Scan/Dabs have a 1120 listed…
February 15, 2012
#9
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.
February 16, 2012
#10
[...] HD 7770 OC edition reviewtechPowerUp – AMD Radeon HD 7770 GHz Edition 1 GBKitGuru – Sapphire HD7770 1GHZ Overclock Edition Review, VTX3D HD7770 1GHZ Edition Crossfire Review, HIS HD7750 iCooler Graphics Card ReviewHardware [...]
April 25, 2012
#11
See this for more information http://www.futurehardware.com/latest-tech-news/737.htm
May 16, 2012
#12
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.