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

Intro

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

Compare that to the Radeon HD 4850 1GB, which comes with a core clock speed of 625 MHz and a GDDR4 memory speed of 993 MHz. It also features a 256-bit bus, and uses a 55 nm design. It is comprised 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 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 small bit faster than the GeForce 8800 GTS (G92) in general. (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 quite a bit (more or less 66%) better 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

If using a high screen resolution is important to you, then the GeForce 8800 GTS (G92) is a better choice, but it probably won't make a huge difference. (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 information (in units of MB per second) that can be transferred past the external memory interface within a second. The number is calculated by multiplying the card's interface width by its memory speed. If the card has DDR RAM, it should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The higher the card's memory bandwidth, the better the card will be in general. It especially helps with AA, HDR and high resolutions.

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

Pixel Rate: Pixel rate is the most pixels the video card can possibly write to its local memory per second - measured in millions of pixels per second. The number is calculated by multiplying the amount of colour ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel output rate is also dependant on lots of other factors, most notably 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 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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