GeForce GTS 150 vs Radeon HD 7750

Intro

Compare those specs to the Radeon HD 7750, which comes with core clock 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 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 7750		55 Watts
GeForce GTS 150		141 Watts
	Difference: 86 Watts (156%)

Memory Bandwidth

In theory, the Radeon HD 7750 should be a lot faster than the GeForce GTS 150 in general. (explain)

Radeon HD 7750		72000 MB/sec
GeForce GTS 150		32000 MB/sec
	Difference: 40000 (125%)

Texel Rate

The GeForce GTS 150 is much (about 85%) faster with regards to anisotropic filtering than the Radeon HD 7750. (explain)

GeForce GTS 150		47360 Mtexels/sec
Radeon HD 7750		25600 Mtexels/sec
	Difference: 21760 (85%)

Pixel Rate

If running with lots of anti-aliasing is important to you, then the Radeon HD 7750 is a better choice, but it probably won't make a huge difference. (explain)

Radeon HD 7750		12800 Mpixels/sec
GeForce GTS 150		11840 Mpixels/sec
	Difference: 960 (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

Specifications

Memory Bandwidth: Memory bandwidth is the maximum amount of information (counted in megabytes per second) that can be moved past the external memory interface in one second. It's calculated 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 4 instead. The higher the memory bandwidth, the better the card will be in general. It especially helps with AA, HDR and high resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that are processed per second. This figure is calculated by multiplying the total amount of texture units by the core speed of the chip. The better the texel rate, the better the 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 maximum number of pixels the graphics card can possibly record to its local memory in one second - measured in millions of pixels per second. Pixel rate is calculated 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 rate also depends on quite a few other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the potential to get to the max fill rate.