GeForce 8800 GTS (G92) vs Radeon HD 5770

Intro

The GeForce 8800 GTS (G92) comes with a GPU clock speed of 650 MHz, and the 512 MB of GDDR3 memory runs at 970 MHz through a 256-bit bus. It also is comprised of 128 Stream Processors, 64 Texture Address Units, and 16 Raster Operation Units.

Compare all that to the Radeon HD 5770, which features a clock frequency of 850 MHz and a GDDR5 memory speed of 1200 MHz. It also features a 128-bit memory bus, and makes use of a 40 nm design. It is made up of 800(160x5) SPUs, 40 TAUs, and 16 Raster Operation Units.

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 GTS (G92) Amazon.com Other US-based stores Amazon.co.uk Amazon.de Amazon.fr

Radeon HD 5770 Amazon.com Other US-based stores Amazon.co.uk Amazon.de Amazon.fr

Specifications

Model	GeForce 8800 GTS (G92)	Radeon HD 5770
Manufacturer	nVidia	ATi
Year	Dec 2007	October 13, 2009
Code Name	G92	Juniper XT
Fab Process	65 nm	40 nm
Bus	PCIe x16 2.0	PCIe 2.1 x16
Memory	512 MB	1024 MB
Core Speed	650 MHz	850 MHz
Shader Speed	1625 MHz	(N/A) MHz
Memory Speed	970 MHz	1200 MHz
Unified Shaders	128	800(160x5)
Texture Mapping Units	64	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 3.2
Power (Max TDP)	135 watts	108 watts
Shader Model	4.0	5.0
Bandwidth	62080 MB/sec	76800 MB/sec
Texel Rate	41600 Mtexels/sec	34000 Mtexels/sec
Pixel Rate	10400 Mpixels/sec	13600 Mpixels/sec

Memory Bandwidth: Memory bandwidth is the maximum amount of data (measured in MB per second) that can be transferred past the external memory interface in one second. It is calculated by multiplying the bus width by its memory speed. If the card has DDR memory, the result should be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The better the card's memory bandwidth, the faster the card will be in general. It especially helps with AA, High Dynamic Range and higher screen resolutions.

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

Pixel Rate: Pixel rate is the maximum amount of pixels the graphics card could possibly write to the local memory in a second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the amount of ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel rate is also dependant on lots of other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to reach the maximum fill rate.