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GeForce 8800 GTS (G92) vs Radeon HD 4750

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 memory. It features 128 SPUs as well as 64 TAUs and 16 ROPs.

Compare those specifications to the Radeon HD 4750, which has a core clock speed of 730 MHz and a GDDR5 memory frequency of 800 MHz. It also makes use of a 128-bit memory bus, and makes use of a 40 nm design. It is comprised of 640(128x5) SPUs, 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 (G92) 135 Watts
Difference: 60 Watts (80%)

Memory Bandwidth

The GeForce 8800 GTS (G92) should theoretically perform a lot faster than the Radeon HD 4750 overall. (explain)

GeForce 8800 GTS (G92) 62080 MB/sec
Radeon HD 4750 51200 MB/sec
Difference: 10880 (21%)

Texel Rate

The GeForce 8800 GTS (G92) will be quite a bit (about 78%) faster with regards to anisotropic filtering than the Radeon HD 4750. (explain)

GeForce 8800 GTS (G92) 41600 Mtexels/sec
Radeon HD 4750 23360 Mtexels/sec
Difference: 18240 (78%)

Pixel Rate

The Radeon HD 4750 is just a bit (approximately 12%) faster with regards to FSAA than the GeForce 8800 GTS (G92), and will be capable of handling higher resolutions while still performing well. (explain)

Radeon HD 4750 11680 Mpixels/sec
GeForce 8800 GTS (G92) 10400 Mpixels/sec
Difference: 1280 (12%)

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 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 (G92) Radeon HD 4750
Manufacturer nVidia AMD
Year Dec 2007
Code Name G92 RV740
Memory 512 MB 512 MB
Core Speed 650 MHz 730 MHz
Memory Speed 1940 MHz 3200 MHz
Power (Max TDP) 135 watts 75 watts
Bandwidth 62080 MB/sec 51200 MB/sec
Texel Rate 41600 Mtexels/sec 23360 Mtexels/sec
Pixel Rate 10400 Mpixels/sec 11680 Mpixels/sec
Unified Shaders 128 640(128x5)
Texture Mapping Units 64 32
Render Output Units 16 16
Bus Type GDDR3 GDDR5
Bus Width 256-bit 128-bit
Fab Process 65 nm 40 nm
Transistors 754 million 826 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 maximum amount of data (counted in MB per second) that can be transported across the external memory interface in a second. The number is worked out by multiplying the interface width by the speed of its memory. If the card has DDR type memory, it must be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The higher the bandwidth is, 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 are applied in one second. This is calculated by multiplying the total number of texture units of the card by the core speed of the chip. The higher this number, 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 maximum amount of pixels that the graphics chip could possibly record to its local memory in a second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of Render Output Units by the clock speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as 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 ability to reach the maximum fill rate.

Display Prices

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GeForce 8800 GTS (G92)

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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