Gigabyte HD 7770 OC 1 GB

Gigabyte HD 7770 OC 1 GB

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Introduction



A few weeks ago AMD launched their Radeon HD 7700 Series. The cards use the all-new Cape Verde graphics processor which is based on AMD's new GCN Graphics Core Next architecture that promises increased performance and lower power draw.

Cape Verde is a downscale from the "Tahiti" silicon, on which higher Radeon HD 7900 series parts are based. There are fewer number of redundant components, so Cape Verde is left functionally-identical to Tahiti, but is smaller, built for more affordable graphics cards. Cape Verde also retains the basic hierarchy of the architecture as implemented in Tahiti.



Gigabyte's HD 7770 OC is a custom implementation of the HD 7770. It features a massively increased GPU clock speed of 1100 MHz. Memory clock has been increased too, to 1250 MHz.

Radeon HD 7770 Market Segment Analysis
 Radeon
HD 5750
Radeon
HD 5770
Radeon
HD 7750
GeForce
GTX 550 Ti
Radeon
HD 6790
Radeon
HD 6850
GeForce
GTX 460
GeForce
GTX 460
Radeon
HD 6870
Radeon
HD 7770
Gigabyte HD
7770 OC
GeForce
GTX 560
GeForce
GTX 560 Ti
Shader Units7208005121928009603363361120640640336384
ROPs16161624163224323216163232
Graphics ProcessorJuniperJuniperCape VerdeGF116BartsBartsGF104GF104BartsCape VerdeCape VerdeGF114GF114
Transistors1040M1040M1500M1170M1700M1700M1950M1950M1700M1500M1500M1950M1950M
Memory Size1024 MB1024 MB1024 MB1024 MB1024 MB1024 MB768 MB1024 MB1024 MB1024 MB1024 MB1024 MB1024 MB
Memory Bus Width128 bit128 bit128 bit192 bit256 bit256 bit192 bit256 bit256 bit128 bit128 bit256 bit256 bit
Core Clock700 MHz850 MHz800 MHz900 MHz840 MHz775 MHz675 MHz675 MHz900 MHz1000 MHz1100 MHz810 MHz823 MHz
Memory Clock1150 MHz1200 MHz1125 MHz1026 MHz1050 MHz1000 MHz900 MHz900 MHz1050 MHz1125 MHz1250 MHz1002 MHz1002 MHz
Price$110$105$110$120$125$135$140$140$155$160$160$170$210
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