GeForce 8800 GTS (G92) vs Radeon HD 4830 1GB

Intro

The GeForce 8800 GTS (G92) makes use of a 65 nm design. nVidia has set the core speed at 650 MHz. The GDDR3 RAM works at a speed of 970 MHz on this specific card. It features 128 SPUs as well as 64 Texture Address Units and 16 Rasterization Operator Units.

Compare those specifications to the Radeon HD 4830 1GB, which uses a 55 nm design. ATi has clocked the core frequency at 575 MHz. The GDDR4 memory is set to run at a frequency of 900 MHz on this specific card. It features 640(128x5) SPUs along with 32 Texture Address Units and 16 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 GTS (G92) Amazon.com Other US-based stores Amazon.co.uk Amazon.de Amazon.fr

Radeon HD 4830 1GB Amazon.com Other US-based stores Amazon.co.uk Amazon.de Amazon.fr

Specifications

Model	GeForce 8800 GTS (G92)	Radeon HD 4830 1GB
Manufacturer	nVidia	ATi
Year	Dec 2007	Oct 21, 2008
Code Name	G92	RV770 LE
Fab Process	65 nm	55 nm
Bus	PCIe x16 2.0	PCIe 2.0 x16
Memory	512 MB	1024 MB
Core Speed	650 MHz	575 MHz
Shader Speed	1625 MHz	(N/A) MHz
Memory Speed	970 MHz	900 MHz
Unified Shaders	128	640(128x5)
Texture Mapping Units	64	32
Render Output Units	16	16
Bus Type	GDDR3	GDDR4
Bus Width	256-bit	256-bit
DirectX Version	DirectX 10	DirectX 10.1
OpenGL Version	OpenGL 3.0	OpenGL 3.0
Power (Max TDP)	135 watts	95 watts
Shader Model	4.0	4.1
Bandwidth	62080 MB/sec	57600 MB/sec
Texel Rate	41600 Mtexels/sec	18400 Mtexels/sec
Pixel Rate	10400 Mpixels/sec	9200 Mpixels/sec

Memory Bandwidth: Memory bandwidth is the largest amount of data (counted in megabytes per second) that can be transported across the external memory interface in a second. It is calculated by multiplying the interface width by its memory clock speed. If the card has DDR type RAM, it should 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 AA, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that can be applied per second. This figure is worked out 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 video card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels in one second.

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics chip could possibly write to its local memory per second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of Render Output Units by the the card's clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate also depends on many other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the potential to reach the maximum fill rate.