GeForce 8800 GT 1GB vs Radeon HD 6770 1GB

Intro

The GeForce 8800 GT 1GB features clock speeds of 600 MHz on the GPU, and 900 MHz on the 1024 MB of GDDR3 memory. It features 112 SPUs as well as 56 Texture Address Units and 16 Rasterization Operator Units.

Compare those specs to the Radeon HD 6770 1GB, which has core clock speeds of 900 MHz on the GPU, and 1050 MHz on the 1024 MB of GDDR5 memory. It features 800 SPUs along with 40 Texture Address Units and 16 ROPs.

Price Comparison

Please note that the price comparisons are based on search keywords, and might not be the exact same card listed on this page. We have no control over the accuracy of their search results.

GeForce 8800 GT 1GB Amazon.com Other US-based stores Amazon.co.uk Amazon.de Amazon.fr

Radeon HD 6770 1GB Amazon.com Other US-based stores Amazon.co.uk Amazon.de Amazon.fr

Specifications

Model	GeForce 8800 GT 1GB	Radeon HD 6770 1GB
Manufacturer	nVidia	ATi
Year	Dec 2007	January 2011
Code Name	G92	Juniper XT
Fab Process	65 nm	40 nm
Bus	PCIe x16 2.0	PCIe x16
Memory	1024 MB	1024 MB
Core Speed	600 MHz	900 MHz
Shader Speed	1500 MHz	(N/A) MHz
Memory Speed	900 MHz	1050 MHz
Unified Shaders	112	800
Texture Mapping Units	56	40
Render Output Units	16	16
Bus Type	GDDR3	GDDR5
Bus Width	256-bit	128-bit
DirectX Version	DirectX 10	DirectX 11
OpenGL Version	OpenGL 3.0	OpenGL 4.1
Power (Max TDP)	105 watts	108 watts
Shader Model	4.0	5.0
Bandwidth	57600 MB/sec	67200 MB/sec
Texel Rate	33600 Mtexels/sec	36000 Mtexels/sec
Pixel Rate	9600 Mpixels/sec	14400 Mpixels/sec

Memory Bandwidth: Bandwidth is the max amount of data (in units of MB per second) that can be transferred over the external memory interface within a second. It is calculated by multiplying the bus width by its memory clock speed. If it uses DDR type RAM, it must be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The better the memory bandwidth, the better the card will be in general. It especially helps with AA, HDR and high resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that can be applied per second. This is calculated by multiplying the total number of texture units by the core clock speed of the chip. The higher the texel rate, the better the card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed per second.

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics card can possibly write to its local memory in a second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the number of Render Output Units by the the core speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate also depends on lots of other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to get to the max fill rate.