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GeForce 8800 GTS (G92) vs Radeon HD 4850 512MB

Intro

The GeForce 8800 GTS (G92) comes with core clock speeds of 650 MHz on the GPU, and 970 MHz on the 512 MB of GDDR3 memory. It features 128 SPUs along with 64 Texture Address Units and 16 ROPs.

Compare those specs to the Radeon HD 4850 512MB, which has a core clock frequency of 625 MHz and a GDDR3 memory speed of 993 MHz. It also makes use of a 256-bit memory bus, and uses a 55 nm design. It is made up of 800(160x5) SPUs, 40 Texture Address Units, and 16 Raster Operation Units.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 4850 512MB 110 Watts
GeForce 8800 GTS (G92) 135 Watts
Difference: 25 Watts (23%)

Memory Bandwidth

The Radeon HD 4850 512MB, in theory, should perform just a bit faster than the GeForce 8800 GTS (G92) in general. (explain)

Radeon HD 4850 512MB 63552 MB/sec
GeForce 8800 GTS (G92) 62080 MB/sec
Difference: 1472 (2%)

Texel Rate

The GeForce 8800 GTS (G92) is quite a bit (more or less 66%) better at anisotropic filtering than the Radeon HD 4850 512MB. (explain)

GeForce 8800 GTS (G92) 41600 Mtexels/sec
Radeon HD 4850 512MB 25000 Mtexels/sec
Difference: 16600 (66%)

Pixel Rate

If using high levels of AA is important to you, then the GeForce 8800 GTS (G92) is the winner, but not by far. (explain)

GeForce 8800 GTS (G92) 10400 Mpixels/sec
Radeon HD 4850 512MB 10000 Mpixels/sec
Difference: 400 (4%)

Please note that the above 'benchmarks' are all just theoretical - the results were calculated based on the card's specifications, and real-world performance may (and probably will) vary at least a bit.

Price Comparison

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GeForce 8800 GTS (G92)

Amazon.com

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Radeon HD 4850 512MB

Amazon.com

Check prices at:

Please note that the price comparisons are based on search keywords - sometimes it might show cards with very similar names that are not exactly the same as the one chosen in the comparison. We do try to filter out the wrong results as best we can, though.

Specifications

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Model GeForce 8800 GTS (G92) Radeon HD 4850 512MB
Manufacturer nVidia AMD
Year Dec 2007 Jun 25, 2008
Code Name G92 RV770 PRO
Memory 512 MB 512 MB
Core Speed 650 MHz 625 MHz
Memory Speed 1940 MHz 1986 MHz
Power (Max TDP) 135 watts 110 watts
Bandwidth 62080 MB/sec 63552 MB/sec
Texel Rate 41600 Mtexels/sec 25000 Mtexels/sec
Pixel Rate 10400 Mpixels/sec 10000 Mpixels/sec
Unified Shaders 128 800(160x5)
Texture Mapping Units 64 40
Render Output Units 16 16
Bus Type GDDR3 GDDR3
Bus Width 256-bit 256-bit
Fab Process 65 nm 55 nm
Transistors 754 million 956 million
Bus PCIe x16 2.0 PCIe 2.0 x16
DirectX Version DirectX 10 DirectX 10.1
OpenGL Version OpenGL 3.0 OpenGL 3.0

Memory Bandwidth: Bandwidth is the max amount of data (in units of megabytes per second) that can be transferred past the external memory interface in a second. The number is calculated by multiplying the card's interface width by its memory clock speed. If the card has DDR memory, the result should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The higher the bandwidth is, the faster the card will be in general. It especially helps with AA, HDR and high resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that can be processed in one second. This figure is calculated by multiplying the total texture units by the core 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 in a second.

Pixel Rate: Pixel rate is the most pixels the graphics card could possibly record to its local memory in one second - measured in millions of pixels per second. The number is worked out by multiplying the amount of Render Output Units by the the core clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate also depends on many other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the ability to get to the max fill rate.

Display Prices

Hide Prices

GeForce 8800 GTS (G92)

Amazon.com

Check prices at:

Radeon HD 4850 512MB

Amazon.com

Check prices at:

Please note that the price comparisons are based on search keywords - sometimes it might show cards with very similar names that are not exactly the same as the one chosen in the comparison. We do try to filter out the wrong results as best we can, though.

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