GeForce GTX 650 vs Radeon HD 6750 1GB

Intro

Compare that to the Radeon HD 6750 1GB, which has core speeds of 725 MHz on the GPU, and 1000 MHz on the 1024 MB of GDDR5 RAM. It features 720 SPUs along with 36 TAUs and 16 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 650		64 Watts
Radeon HD 6750 1GB		86 Watts
	Difference: 22 Watts (34%)

Memory Bandwidth

Theoretically speaking, the GeForce GTX 650 is 25% faster than the Radeon HD 6750 1GB in general, due to its higher bandwidth. (explain)

GeForce GTX 650		80000 MB/sec
Radeon HD 6750 1GB		64000 MB/sec
	Difference: 16000 (25%)

Texel Rate

The GeForce GTX 650 is quite a bit (approximately 30%) more effective at texture filtering than the Radeon HD 6750 1GB. (explain)

GeForce GTX 650		33856 Mtexels/sec
Radeon HD 6750 1GB		26100 Mtexels/sec
	Difference: 7756 (30%)

Pixel Rate

The GeForce GTX 650 will be a lot (about 46%) faster with regards to anti-aliasing than the Radeon HD 6750 1GB, and also will be capable of handling higher resolutions without slowing down too much. (explain)

GeForce GTX 650		16928 Mpixels/sec
Radeon HD 6750 1GB		11600 Mpixels/sec
	Difference: 5328 (46%)

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 max amount of information (measured in megabytes per second) that can be moved past the external memory interface within a second. It is worked out by multiplying the card's bus width by the speed of its memory. In the case of DDR RAM, the result should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The better the bandwidth is, the better the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that can be applied per second. This number is worked out by multiplying the total texture units by the core speed of the chip. The higher the texel rate, the better the graphics card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in a second.

Pixel Rate: Pixel rate is the most pixels that the graphics card could possibly record to the local memory in one second - measured in millions of pixels per second. The figure is calculated by multiplying the amount of ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for drawing the pixels (image) on the screen. 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 max fill rate.