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GeForce 8800 GTS (G92) vs Radeon HD 3870 1GB

Intro

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

Compare those specifications to the Radeon HD 3870 1GB, which makes use of a 55 nm design. AMD has set the core frequency at 775 MHz. The GDDR4 memory is set to run at a speed of 1125 MHz on this model. It features 320(64x5) SPUs along with 16 TAUs and 16 Rasterization Operator Units.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 3870 1GB 106 Watts
GeForce 8800 GTS (G92) 135 Watts
Difference: 29 Watts (27%)

Memory Bandwidth

In theory, the Radeon HD 3870 1GB should be a little bit faster than the GeForce 8800 GTS (G92) overall. (explain)

Radeon HD 3870 1GB 72000 MB/sec
GeForce 8800 GTS (G92) 62080 MB/sec
Difference: 9920 (16%)

Texel Rate

The GeForce 8800 GTS (G92) will be quite a bit (more or less 235%) faster with regards to texture filtering than the Radeon HD 3870 1GB. (explain)

GeForce 8800 GTS (G92) 41600 Mtexels/sec
Radeon HD 3870 1GB 12400 Mtexels/sec
Difference: 29200 (235%)

Pixel Rate

The Radeon HD 3870 1GB will be a bit (approximately 19%) faster with regards to FSAA than the GeForce 8800 GTS (G92), and also able to handle higher screen resolutions better. (explain)

Radeon HD 3870 1GB 12400 Mpixels/sec
GeForce 8800 GTS (G92) 10400 Mpixels/sec
Difference: 2000 (19%)

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

Check prices at:

Radeon HD 3870 1GB

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 3870 1GB
Manufacturer nVidia AMD
Year Dec 2007 Nov 19, 2007
Code Name G92 RV670 XT
Memory 512 MB 1024 MB
Core Speed 650 MHz 775 MHz
Memory Speed 1940 MHz 2250 MHz
Power (Max TDP) 135 watts 106 watts
Bandwidth 62080 MB/sec 72000 MB/sec
Texel Rate 41600 Mtexels/sec 12400 Mtexels/sec
Pixel Rate 10400 Mpixels/sec 12400 Mpixels/sec
Unified Shaders 128 320(64x5)
Texture Mapping Units 64 16
Render Output Units 16 16
Bus Type GDDR3 GDDR4
Bus Width 256-bit 256-bit
Fab Process 65 nm 55 nm
Transistors 754 million (Unknown) million
Bus PCIe x16 2.0 PCIe 2.0 x16/AGP 8x
DirectX Version DirectX 10 DirectX 10.1
OpenGL Version OpenGL 3.0 OpenGL 3.0

Memory Bandwidth: Bandwidth is the max amount of data (counted in MB per second) that can be moved across the external memory interface in a second. The number is worked out by multiplying the card's interface width by its memory clock speed. In the case of DDR type RAM, it should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The higher the card's memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and high resolutions.

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

Pixel Rate: Pixel rate is the most pixels that the graphics card could possibly record to its local memory per 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 speed of the card. 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 rate is also dependant on many other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to reach the maximum fill rate.

Display Prices

Hide Prices

GeForce 8800 GTS (G92)

Amazon.com

Check prices at:

Radeon HD 3870 1GB

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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