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GeForce 8800 GTS (G80) 320MB vs Radeon HD 4750

Intro

The GeForce 8800 GTS (G80) 320MB features core speeds of 513 MHz on the GPU, and 792 MHz on the 320 MB of GDDR3 RAM. It features 96 SPUs along with 48 TAUs and 20 Rasterization Operator Units.

Compare all that to the Radeon HD 4750, which uses a 40 nm design. AMD has set the core speed at 730 MHz. The GDDR5 memory works at a speed of 800 MHz on this particular card. It features 640(128x5) SPUs along with 32 TAUs and 16 ROPs.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 4750 75 Watts
GeForce 8800 GTS (G80) 320MB 143 Watts
Difference: 68 Watts (91%)

Memory Bandwidth

As far as performance goes, the GeForce 8800 GTS (G80) 320MB should theoretically be quite a bit superior to the Radeon HD 4750 in general. (explain)

GeForce 8800 GTS (G80) 320MB 63360 MB/sec
Radeon HD 4750 51200 MB/sec
Difference: 12160 (24%)

Texel Rate

The GeForce 8800 GTS (G80) 320MB should be just a bit (more or less 5%) more effective at anisotropic filtering than the Radeon HD 4750. (explain)

GeForce 8800 GTS (G80) 320MB 24624 Mtexels/sec
Radeon HD 4750 23360 Mtexels/sec
Difference: 1264 (5%)

Pixel Rate

The Radeon HD 4750 will be a bit (more or less 14%) faster with regards to full screen anti-aliasing than the GeForce 8800 GTS (G80) 320MB, and capable of handling higher resolutions while still performing well. (explain)

Radeon HD 4750 11680 Mpixels/sec
GeForce 8800 GTS (G80) 320MB 10260 Mpixels/sec
Difference: 1420 (14%)

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 (G80) 320MB

Amazon.com

Check prices at:

Radeon HD 4750

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 (G80) 320MB Radeon HD 4750
Manufacturer nVidia AMD
Year Feb 2007
Code Name G80 RV740
Memory 320 MB 512 MB
Core Speed 513 MHz 730 MHz
Memory Speed 1584 MHz 3200 MHz
Power (Max TDP) 143 watts 75 watts
Bandwidth 63360 MB/sec 51200 MB/sec
Texel Rate 24624 Mtexels/sec 23360 Mtexels/sec
Pixel Rate 10260 Mpixels/sec 11680 Mpixels/sec
Unified Shaders 96 640(128x5)
Texture Mapping Units 48 32
Render Output Units 20 16
Bus Type GDDR3 GDDR5
Bus Width 320-bit 128-bit
Fab Process 90 nm 40 nm
Transistors 681 million 826 million
Bus PCIe x16 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 moved across the external memory interface in one second. It is worked out by multiplying the interface width by its memory clock speed. If the card has DDR type RAM, it must be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The better the memory bandwidth, the better the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be processed per second. This is calculated by multiplying the total number of texture units of the card by the core clock speed of the chip. The higher 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 number of pixels the graphics card can possibly record to its local memory per second - measured in millions of pixels per second. The figure is worked out by multiplying the number of ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel rate also depends on lots of other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to reach the max fill rate.

Display Prices

Hide Prices

GeForce 8800 GTS (G80) 320MB

Amazon.com

Check prices at:

Radeon HD 4750

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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