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Old 30-12-2011, 02:26   #6
giovanbattista
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piccola integrazione riguardante la 7770:

Radeon HD 7770 is based on Cape Verde XT core which is 164 square millimeters in size. It features 896 stream processors and 56 texture units. It also has 16 raster operating units. It is build to work with 2GB of 128bit GDDR5 memory. Reference clock is set to 1 GHz, while memory is clocked at 1375 MHz.

The card is supporting DirectX 11.1 and is PCI-Express 3.0 compiliant. It requires one 6pin power connector which will provide 90-100 Wats of power.

We have also first leaked benchmarks of Radeon HD 7770. The card was tested on Core i5 3550K with 8.940 RC2 drivers.

3Dmark results

3Dmark06: 18143(SM2.0: 6785, HDR: 8086, CPU: 6390)
3Dmark11 Extreme Preset: X1077 (GPU: 965)
3Dmark11 Performance Preset: P3421 (GPU: 3138)


Radeon HD 7770 has around 43% of Radeon HD 7970′s performance. It is comparable to GeForce GTX 560 TI 384 results, slower than Radeon HD 6870 or 5850 though.


As you can see, The card features a total of 4 Memory chips resulting in a 128-bit GDDR5 interface and a 2GB memory Buffer. Stream Processor Count and ROPs were not mentioned by the user but looking at our previous reports, A Stream Processor count of 896 and 16 ROPs is expected from the Cape Verde XT chip.

The Core clock is maintained at 1Ghz (1.1Ghz BIOS) and memory runs at a frequency of 1125Mhz. The card is DX11.1 and PCI-e 3.0 Compliant and is powered by a single 6 Pin Connector which means TDP nears around a 90W – 100W.

The Test Setup consisted of a Ivy Bridge ES CPU – Core i5 3550K @ 3.3Ghz, A Z77 Chipset based Motherboard, Driver used was AMD Catalyst 8.940 RC2. Benchmarks below:

3DMark 06:
HD7770 (Stock @ 1Ghz): 18143 3D Marks (SM2.0: 6785/HDR: 8086/CPU: 6390)

3DMark 11 (Performance Preset):
HD7770 (Stock @ 1Ghz): P3421 (3138 Graphics Score)

3DMark 11 (Extreme Preset):
HD7770 (Stock @ 1Ghz): X1077 (965 Graphics Score)

The HD7770 is expected to launch in February 2012 at a price point of $150.


il tutto da

bigpao007, il nuovo agente di sua maestà in missione oltreoceano


scusate se nel post ho ripetuto dei dati ma ho preso le notizie da 2 siti e ora corro a nanna....prima di coricarmi vi lascio una chicca, da prendere con le pinze......è una mezza fudzillata :



Radeon HD 7970 3GB – January 9th – $549

The first graphics card released so far is Tahiti XT, which is Radeon HD 7970. Specification is already known, many websites have very detailed reviews. So far we only know that Club3D is preparing their model, which is simply the same reference look. It is under NDA until January 9th which is the official release date. We also learned that ASUS is ready with their TOP model, which has overlocked gpu clock to 1GHz.

Radeon HD 7950 3GB & 1.5GB – January & March – $449


According to the latest leaked news, Radeon HD 7950 (Tahiti Pro), will feature gpu clock at 900MHz and memory clock at 1250MHz (5GHz effective). Tahiti Pro is build with 1792 shaders processing units and 112 texture processing units. It will have 32 raster operating units as well. So far we know about 3GB GDDR5 model, but according to some leaked news, there is a 1.5GB GDDR5 model coming in following months. Suggested retail price is $449.

Radeon HD 7870 & 7850 – February – $299

Radeon HD 7870 (Pitcairn XT) is yet unverified and there is no confirmed information so far. We can only base our rumors on specifications which are known for some time now. But they may change since the card is still under development. Radeon HD 78xx is based on 245 square millimeter chip. Suggested price for Radeon HD 7850 (Pitcairn Pro) should oscillate around $219.

Radeon HD 7770 & 7750 – February – $149

Radeon HD 77xx family is based on 164 square milimeter chip (Cape Verde). Cards will feature 896 stream processing units, 56 texture and 16 raster operating units.

Radeon HD 7750 is a downclocked version of 7770.

Radeon HD 7990 – March – $849

The first dualgpu card from HD 7000 series will be released in March. So it should hit stores in April. Radeon HD 7990 features two Tahiti cores packed with crossfire technology. Radeon HD 7990 should have 6GB of GDDR5 memory clocked at 5GHz effectively. Should consist of 4096 stream processing units and 256 texture rendering processors. Radeon HD 7990 will have up to 64 raster operating units.

Ultima modifica di giovanbattista : 30-12-2011 alle 02:34.
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