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GeForce 8800 GTS (G92) vs Radeon HD 4850 1GB

Intro

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

Compare those specs to the Radeon HD 4850 1GB, which features core clock speeds of 625 MHz on the GPU, and 993 MHz on the 1024 MB of GDDR4 memory. It features 800(160x5) SPUs along with 40 TAUs and 16 ROPs.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 4850 1GB 110 Watts
GeForce 8800 GTS (G92) 135 Watts
Difference: 25 Watts (23%)

Memory Bandwidth

Theoretically speaking, the Radeon HD 4850 1GB should perform just a bit faster than the GeForce 8800 GTS (G92) overall. (explain)

Radeon HD 4850 1GB 63552 MB/sec
GeForce 8800 GTS (G92) 62080 MB/sec
Difference: 1472 (2%)

Texel Rate

The GeForce 8800 GTS (G92) should be a lot (more or less 66%) better at AF than the Radeon HD 4850 1GB. (explain)

GeForce 8800 GTS (G92) 41600 Mtexels/sec
Radeon HD 4850 1GB 25000 Mtexels/sec
Difference: 16600 (66%)

Pixel Rate

The GeForce 8800 GTS (G92) is just a bit (more or less 4%) better at AA than the Radeon HD 4850 1GB, and capable of handling higher screen resolutions without losing too much performance. (explain)

GeForce 8800 GTS (G92) 10400 Mpixels/sec
Radeon HD 4850 1GB 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 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 4850 1GB
Manufacturer nVidia AMD
Year Dec 2007 Jun 25, 2008
Code Name G92 RV770 PRO
Memory 512 MB 1024 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 GDDR4
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: Memory bandwidth is the largest amount of information (measured in megabytes per second) that can be transported across the external memory interface in one second. It's calculated by multiplying the bus width by the speed of its memory. In the case of DDR memory, it must 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 higher screen resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that can be applied per second. This number is calculated by multiplying the total number of texture units of the card by the core clock speed of the chip. The better this number, the better the video card will be at 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 card can possibly record to its local memory in a second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the number of colour ROPs by the clock 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 quite a few other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the potential to reach the max fill rate.

Display Prices

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GeForce 8800 GTS (G92)

Amazon.com

Check prices at:

Radeon HD 4850 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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