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GeForce 8800 GT 1GB vs Radeon HD 4750

Intro

The GeForce 8800 GT 1GB has a GPU core clock speed of 600 MHz, and the 1024 MB of GDDR3 RAM runs at 900 MHz through a 256-bit bus. It also is comprised of 112 SPUs, 56 TAUs, and 16 ROPs.

Compare that to the Radeon HD 4750, which has a core clock frequency of 730 MHz and a GDDR5 memory speed of 800 MHz. It also features a 128-bit bus, and makes use of a 40 nm design. It is made up of 640(128x5) SPUs, 32 Texture Address Units, and 16 Raster Operation Units.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 4750 75 Watts
GeForce 8800 GT 1GB 105 Watts
Difference: 30 Watts (40%)

Memory Bandwidth

The GeForce 8800 GT 1GB should theoretically be just a bit faster than the Radeon HD 4750 overall. (explain)

GeForce 8800 GT 1GB 57600 MB/sec
Radeon HD 4750 51200 MB/sec
Difference: 6400 (13%)

Texel Rate

The GeForce 8800 GT 1GB will be much (approximately 44%) more effective at texture filtering than the Radeon HD 4750. (explain)

GeForce 8800 GT 1GB 33600 Mtexels/sec
Radeon HD 4750 23360 Mtexels/sec
Difference: 10240 (44%)

Pixel Rate

If running with a high resolution is important to you, then the Radeon HD 4750 is superior to the GeForce 8800 GT 1GB, by far. (explain)

Radeon HD 4750 11680 Mpixels/sec
GeForce 8800 GT 1GB 9600 Mpixels/sec
Difference: 2080 (22%)

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 GT 1GB

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 GT 1GB Radeon HD 4750
Manufacturer nVidia AMD
Year Dec 2007
Code Name G92 RV740
Memory 1024 MB 512 MB
Core Speed 600 MHz 730 MHz
Memory Speed 1800 MHz 3200 MHz
Power (Max TDP) 105 watts 75 watts
Bandwidth 57600 MB/sec 51200 MB/sec
Texel Rate 33600 Mtexels/sec 23360 Mtexels/sec
Pixel Rate 9600 Mpixels/sec 11680 Mpixels/sec
Unified Shaders 112 640(128x5)
Texture Mapping Units 56 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: Bandwidth is the maximum amount of data (measured in MB per second) that can be moved over the external memory interface in a second. It is worked out by multiplying the interface width by its memory clock speed. In the case of DDR memory, 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 number of texture map elements (texels) that are applied in one second. This number is worked out by multiplying the total number of texture units of the card by the core clock speed of the chip. The better the texel rate, the better the 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 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 core clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate also depends on quite a few other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to get to the max fill rate.

Display Prices

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GeForce 8800 GT 1GB

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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