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GeForce 9800 GTX vs Radeon HD 7750

Intro

The GeForce 9800 GTX comes with clock speeds of 675 MHz on the GPU, and 1100 MHz on the 512 MB of GDDR3 RAM. It features 128 SPUs along with 64 Texture Address Units and 16 ROPs.

Compare all that to the Radeon HD 7750, which features core clock speeds of 800 MHz on the GPU, and 1125 MHz on the 1024 MB of GDDR5 RAM. It features 512 SPUs along with 32 Texture Address Units and 16 ROPs.

Display Graphs

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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

Performance-wise, the Radeon HD 7750 should theoretically be just a bit better 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 (more or less 69%) more effective at texture 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 is a little bit (approximately 19%) faster with regards to anti-aliasing than the GeForce 9800 GTX, and also should be able to handle 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: Memory bandwidth is the max amount of data (in units of MB per second) that can be transported over the external memory interface in one second. The number is calculated by multiplying the interface width by its memory speed. In the case of DDR memory, it should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The better the bandwidth is, the better the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be applied per second. This number is worked out by multiplying the total amount 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 handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels per second.

Pixel Rate: Pixel rate is the maximum amount of pixels the video card could possibly write to its local memory in one second - measured in millions of pixels per second. The figure is calculated by multiplying the amount of Render Output Units 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 bandwidth is, the lower the ability 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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