GeForce GT 430 1GB vs Radeon HD 7750

Intro

Compare those specs to the Radeon HD 7750, which has 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 Texture Address Units, and 16 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 7750		55 Watts
GeForce GT 430 1GB		60 Watts
	Difference: 5 Watts (9%)

Memory Bandwidth

As far as performance goes, the Radeon HD 7750 should in theory be quite a bit superior to the GeForce GT 430 1GB in general. (explain)

Radeon HD 7750		72000 MB/sec
GeForce GT 430 1GB		28800 MB/sec
	Difference: 43200 (150%)

Texel Rate

The Radeon HD 7750 should be much (about 129%) more effective at texture filtering than the GeForce GT 430 1GB. (explain)

Radeon HD 7750		25600 Mtexels/sec
GeForce GT 430 1GB		11200 Mtexels/sec
	Difference: 14400 (129%)

Pixel Rate

The Radeon HD 7750 will be quite a bit (about 357%) faster with regards to full screen anti-aliasing than the GeForce GT 430 1GB, and will be capable of handling higher screen resolutions without slowing down too much. (explain)

Radeon HD 7750		12800 Mpixels/sec
GeForce GT 430 1GB		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: Bandwidth is the maximum amount of information (counted in MB per second) that can be transferred over the external memory interface in one second. The number is worked out by multiplying the interface width by its memory speed. If the card has DDR type RAM, it must be multiplied by 2 once again. If 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 number of texture map elements (texels) that are processed per second. This is calculated by multiplying the total texture units by the core speed of the chip. The higher this number, the better the graphics 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 most pixels that the graphics card could possibly write to the local memory in a second - measured in millions of pixels per second. The number is calculated by multiplying the number 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 many other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to reach the max fill rate.