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

Intro

The GeForce 8800 GTS (G92) has a GPU clock speed of 650 MHz, and the 512 MB of GDDR3 memory runs at 970 MHz through a 256-bit bus. It also is comprised of 128 SPUs, 64 TAUs, and 16 ROPs.

Compare those specifications to the Radeon HD 4850 1GB, which uses a 55 nm design. AMD has clocked the core speed at 625 MHz. The GDDR4 RAM works at a speed of 993 MHz on this particular model. It features 800(160x5) SPUs along with 40 TAUs and 16 Rasterization Operator Units.

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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

The Radeon HD 4850 1GB should in theory be a little 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) is a lot (approximately 66%) more effective at anisotropic filtering 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 a bit (approximately 4%) faster with regards to AA than the Radeon HD 4850 1GB, and also should be able to handle higher resolutions while still performing well. (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

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.

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: Bandwidth is the maximum amount of data (in units of megabytes per second) that can be transported across the external memory interface within a second. It is calculated by multiplying the bus width by its memory speed. If the card has DDR RAM, it must be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The higher the card's memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that can be applied per second. This figure is calculated by multiplying the total texture units by the core speed of the chip. The better this number, the better the graphics 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 maximum amount of pixels the graphics card can possibly record to the local memory in one second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the number of Render Output Units by the the card's clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output rate is also dependant on many other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to reach the max fill rate.

Display Prices

Hide Prices

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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