GeForce GTX 660 vs Radeon HD 5750 512MB

Intro

Compare those specs to the Radeon HD 5750 512MB, which makes use of a 40 nm design. AMD has clocked the core frequency at 700 MHz. The GDDR5 memory is set to run at a frequency of 1150 MHz on this particular model. It features 720(144x5) SPUs as well as 36 TAUs and 16 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 5750 512MB		86 Watts
GeForce GTX 660		140 Watts
	Difference: 54 Watts (63%)

Memory Bandwidth

The GeForce GTX 660 should theoretically be much faster than the Radeon HD 5750 512MB overall. (explain)

GeForce GTX 660		144192 MB/sec
Radeon HD 5750 512MB		73600 MB/sec
	Difference: 70592 (96%)

Texel Rate

The GeForce GTX 660 is a lot (more or less 211%) more effective at anisotropic filtering than the Radeon HD 5750 512MB. (explain)

GeForce GTX 660		78400 Mtexels/sec
Radeon HD 5750 512MB		25200 Mtexels/sec
	Difference: 53200 (211%)

Pixel Rate

The GeForce GTX 660 is much (approximately 110%) faster with regards to full screen anti-aliasing than the Radeon HD 5750 512MB, and also will be able to handle higher resolutions better. (explain)

GeForce GTX 660		23520 Mpixels/sec
Radeon HD 5750 512MB		11200 Mpixels/sec
	Difference: 12320 (110%)

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 data (in units of MB per second) that can be transported over the external memory interface within a second. The number is worked out by multiplying the interface width by its memory clock speed. If it uses DDR memory, it should be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The better the bandwidth is, the better the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that are applied per second. This is worked out by multiplying the total texture units by the core clock 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 applied in a second.

Pixel Rate: Pixel rate is the maximum amount of pixels the video card could possibly write to the local memory per second - measured in millions of pixels per second. The figure is calculated by multiplying the amount of colour ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate is also dependant on many other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the potential to get to the maximum fill rate.