GeForce 8800 GT 512MB vs Radeon HD 4670 1GB

Intro

The GeForce 8800 GT 512MB makes use of a 65 nm design. nVidia has clocked the core speed at 600 MHz. The GDDR3 RAM is set to run at a speed of 900 MHz on this particular model. It features 112 SPUs along with 56 TAUs and 16 Rasterization Operator Units.

Compare all of that to the Radeon HD 4670 1GB, which has core clock speeds of 750 MHz on the GPU, and 1100 MHz on the 1024 MB of GDDR4/GDDR3/DDR3/DDR2 RAM. It features 320(64x5) SPUs as well as 32 TAUs and 8 Rasterization Operator 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 GT 512MB Amazon.com Other US-based stores Amazon.co.uk Amazon.de Amazon.fr

Radeon HD 4670 1GB Amazon.com Other US-based stores Amazon.co.uk Amazon.de Amazon.fr

Specifications

Model	GeForce 8800 GT 512MB	Radeon HD 4670 1GB
Manufacturer	nVidia	ATi
Year	Oct 2007	Sep 10, 2008
Code Name	G92	RV730 XT
Fab Process	65 nm	55 nm
Bus	PCIe x16 2.0	PCIe 2.0 x16, AGP 8x
Memory	512 MB	1024 MB
Core Speed	600 MHz	750 MHz
Shader Speed	1500 MHz	(N/A) MHz
Memory Speed	900 MHz (1800 MHz effective)	1100 MHz (2200 MHz effective)
Unified Shaders	112	320(64x5)
Texture Mapping Units	56	32
Render Output Units	16	8
Bus Type	GDDR3	GDDR4/GDDR3/DDR3/DDR2
Bus Width	256-bit	128-bit
DirectX Version	DirectX 10	DirectX 10.1
OpenGL Version	OpenGL 3.0	OpenGL 3.0
Power (Max TDP)	105 watts	70 watts
Shader Model	4.0	4.1
Bandwidth	57600 MB/sec	35200 MB/sec
Texel Rate	33600 Mtexels/sec	24000 Mtexels/sec
Pixel Rate	9600 Mpixels/sec	6000 Mpixels/sec

Memory Bandwidth: Bandwidth is the max amount of data (measured in MB per second) that can be transferred past the external memory interface in one second. It's worked out by multiplying the card's interface width by its memory speed. If the card has DDR memory, it must be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The higher the card's memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

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

Pixel Rate: Pixel rate is the most pixels that the graphics chip can possibly record to the local memory in one second - measured in millions of pixels per second. The figure is worked out by multiplying the number of Render Output Units by the the core speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel output rate is also dependant on many other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to reach the maximum fill rate.