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GeForce 9800 GTX vs Radeon HD 7750

Intro

The GeForce 9800 GTX features a clock speed of 675 MHz and a GDDR3 memory frequency of 1100 MHz. It also uses a 256-bit bus, and uses a 65 nm design. It features 128 SPUs, 64 Texture Address Units, and 16 ROPs.

Compare that to the Radeon HD 7750, which features GPU core speed of 800 MHz, and 1024 MB of GDDR5 memory set to run at 1125 MHz through a 128-bit bus. It also is comprised of 512 Stream Processors, 32 TAUs, and 16 ROPs.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 7750 55 Watts
GeForce 9800 GTX 140 Watts
Difference: 85 Watts (155%)

Memory Bandwidth

The Radeon HD 7750, in theory, should perform a bit faster than the GeForce 9800 GTX overall. (explain)

Radeon HD 7750 72000 MB/sec
GeForce 9800 GTX 70400 MB/sec
Difference: 1600 (2%)

Texel Rate

The GeForce 9800 GTX will be quite a bit (approximately 69%) better at anisotropic filtering than the Radeon HD 7750. (explain)

GeForce 9800 GTX 43200 Mtexels/sec
Radeon HD 7750 25600 Mtexels/sec
Difference: 17600 (69%)

Pixel Rate

The Radeon HD 7750 should be a little bit (about 19%) more effective at AA than the GeForce 9800 GTX, and also will be capable of handling higher screen resolutions better. (explain)

Radeon HD 7750 12800 Mpixels/sec
GeForce 9800 GTX 10800 Mpixels/sec
Difference: 2000 (19%)

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 9800 GTX

Amazon.com

Check prices at:

Radeon HD 7750

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 9800 GTX Radeon HD 7750
Manufacturer nVidia AMD
Year April 2008 February 2012
Code Name G92 Cape Verde Pro
Memory 512 MB 1024 MB
Core Speed 675 MHz 800 MHz
Memory Speed 2200 MHz 4500 MHz
Power (Max TDP) 140 watts 55 watts
Bandwidth 70400 MB/sec 72000 MB/sec
Texel Rate 43200 Mtexels/sec 25600 Mtexels/sec
Pixel Rate 10800 Mpixels/sec 12800 Mpixels/sec
Unified Shaders 128 512
Texture Mapping Units 64 32
Render Output Units 16 16
Bus Type GDDR3 GDDR5
Bus Width 256-bit 128-bit
Fab Process 65 nm 28 nm
Transistors 754 million 1500 million
Bus PCIe x16 2.0 PCIe 3.0 x16
DirectX Version DirectX 10 DirectX 11.1
OpenGL Version OpenGL 3.0 OpenGL 4.2

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's calculated by multiplying the card's interface width by its memory clock speed. In the case of DDR type RAM, the result should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The higher the memory bandwidth, the faster 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 figure is calculated by multiplying the total amount of texture units by the core speed of the chip. The higher this number, the better the card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels per second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics chip can possibly write to the local memory in one second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the number of colour ROPs by the the core 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 output rate is also dependant 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 9800 GTX

Amazon.com

Check prices at:

Radeon HD 7750

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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