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GeForce 9800 GTX+ vs Radeon HD 7750

Intro

The GeForce 9800 GTX+ comes with a clock frequency of 738 MHz and a GDDR3 memory frequency of 1100 MHz. It also uses a 256-bit bus, and uses a 55 nm design. It features 128 SPUs, 64 TAUs, and 16 ROPs.

Compare those specifications to the Radeon HD 7750, which features core speeds of 800 MHz on the GPU, and 1125 MHz on the 1024 MB of GDDR5 RAM. It features 512 SPUs as well as 32 TAUs and 16 Rasterization Operator Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 7750 55 Watts
GeForce 9800 GTX+ 145 Watts
Difference: 90 Watts (164%)

Memory Bandwidth

Theoretically speaking, the Radeon HD 7750 should be a little 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+ should be much (about 85%) faster with regards to AF than the Radeon HD 7750. (explain)

GeForce 9800 GTX+ 47232 Mtexels/sec
Radeon HD 7750 25600 Mtexels/sec
Difference: 21632 (85%)

Pixel Rate

If using high levels of AA is important to you, then the Radeon HD 7750 is a better choice, not by a very large margin though. (explain)

Radeon HD 7750 12800 Mpixels/sec
GeForce 9800 GTX+ 11808 Mpixels/sec
Difference: 992 (8%)

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 July 2008 February 2012
Code Name G92b Cape Verde Pro
Memory 512 MB 1024 MB
Core Speed 738 MHz 800 MHz
Memory Speed 2200 MHz 4500 MHz
Power (Max TDP) 145 watts 55 watts
Bandwidth 70400 MB/sec 72000 MB/sec
Texel Rate 47232 Mtexels/sec 25600 Mtexels/sec
Pixel Rate 11808 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 55 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 largest amount of information (in units of megabytes per second) that can be transferred over the external memory interface within a second. It's calculated by multiplying the interface width by its memory clock speed. If the card has DDR memory, it should be multiplied by 2 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 anti-aliasing, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that can be processed 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 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 number of pixels the graphics card could possibly write to the local memory per second - measured in millions of pixels per second. The figure is worked out by multiplying the amount of colour ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate also depends on quite a few other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to get to the maximum 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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