GeForce GTS 150 vs Radeon HD 7750

Intro

Compare those specs to the Radeon HD 7750, which comes with GPU clock speed of 800 MHz, and 1024 MB of GDDR5 memory set to run at 1125 MHz through a 128-bit bus. It also features 512 Stream Processors, 32 TAUs, 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 GTS 150		141 Watts
	Difference: 86 Watts (156%)

Memory Bandwidth

Performance-wise, the Radeon HD 7750 should in theory be a lot better than the GeForce GTS 150 overall. (explain)

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

Texel Rate

The GeForce GTS 150 will be quite a bit (about 85%) more effective at 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

The Radeon HD 7750 will be a little bit (about 8%) better at full screen anti-aliasing than the GeForce GTS 150, and also capable of handling higher resolutions better. (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: Bandwidth is the largest amount of information (counted in megabytes per second) that can be transferred across the external memory interface in a second. It is calculated by multiplying the card's bus width by its memory speed. In the case of DDR memory, it must be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The higher the card's memory bandwidth, the better 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 texture map elements (texels) that are processed in one second. This is calculated by multiplying the total texture units by the core 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 number of pixels that the graphics card could possibly write to its local memory in a second - measured in millions of pixels per second. The number is calculated by multiplying the amount of ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill rate also depends on quite a few other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the ability to reach the max fill rate.