GeForce GT 430 vs Radeon HD 7750

Intro

Compare those specs to the Radeon HD 7750, which features GPU clock speed of 800 MHz, and 1024 MB of GDDR5 RAM set to run at 1125 MHz through a 128-bit bus. It also is made up of 512 Stream Processors, 32 TAUs, and 16 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 7750		55 Watts
GeForce GT 430		60 Watts
	Difference: 5 Watts (9%)

Memory Bandwidth

In theory, the Radeon HD 7750 is 150% quicker than the GeForce GT 430 overall, because of its higher bandwidth. (explain)

Radeon HD 7750		72000 MB/sec
GeForce GT 430		28800 MB/sec
	Difference: 43200 (150%)

Texel Rate

The Radeon HD 7750 should be quite a bit (more or less 129%) better at texture filtering than the GeForce GT 430. (explain)

Radeon HD 7750		25600 Mtexels/sec
GeForce GT 430		11200 Mtexels/sec
	Difference: 14400 (129%)

Pixel Rate

The Radeon HD 7750 will be much (more or less 357%) more effective at anti-aliasing than the GeForce GT 430, and also capable of handling higher resolutions without losing too much performance. (explain)

Radeon HD 7750		12800 Mpixels/sec
GeForce GT 430		2800 Mpixels/sec
	Difference: 10000 (357%)

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

Specifications

Memory Bandwidth: Memory bandwidth is the maximum amount of data (measured in MB per second) that can be moved over the external memory interface in one second. It's worked out by multiplying the bus width by its memory clock speed. If it uses DDR memory, it must be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The better the memory bandwidth, 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 processed in one second. This number is worked out by multiplying the total 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 applied in one second.

Pixel Rate: Pixel rate is the most pixels that the graphics chip could possibly record to its local memory per second - measured in millions of pixels per second. Pixel rate 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 rate is also dependant on many other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to get to the maximum fill rate.