GeForce GTS 250 1GB vs Radeon HD 5750 1GB

Intro

Compare that to the Radeon HD 5750 1GB, which features a core clock speed of 700 MHz and a GDDR5 memory speed of 1150 MHz. It also features a 128-bit bus, and uses a 40 nm design. It is comprised of 720(144x5) SPUs, 36 Texture Address Units, and 16 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 5750 1GB		86 Watts
GeForce GTS 250 1GB		145 Watts
	Difference: 59 Watts (69%)

Memory Bandwidth

As far as performance goes, the Radeon HD 5750 1GB should in theory be a little bit superior to the GeForce GTS 250 1GB overall. (explain)

Radeon HD 5750 1GB		73600 MB/sec
GeForce GTS 250 1GB		70400 MB/sec
	Difference: 3200 (5%)

Texel Rate

The GeForce GTS 250 1GB will be a lot (more or less 87%) more effective at texture filtering than the Radeon HD 5750 1GB. (explain)

GeForce GTS 250 1GB		47232 Mtexels/sec
Radeon HD 5750 1GB		25200 Mtexels/sec
	Difference: 22032 (87%)

Pixel Rate

The GeForce GTS 250 1GB will be a bit (about 5%) faster with regards to AA than the Radeon HD 5750 1GB, and also able to handle higher resolutions more effectively. (explain)

GeForce GTS 250 1GB		11808 Mpixels/sec
Radeon HD 5750 1GB		11200 Mpixels/sec
	Difference: 608 (5%)

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. It is calculated by multiplying the card's bus width by its memory clock speed. If it uses DDR memory, it must be multiplied by 2 once again. If DDR5, multiply by 4 instead. The higher the 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 can be applied per second. This figure is calculated by multiplying the total texture units of the card by the core speed of the chip. The better this number, the better the card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied per second.

Pixel Rate: Pixel rate is the most pixels that the graphics chip can possibly write to the local memory in a second - measured in millions of pixels per second. The figure is calculated by multiplying the amount of Render Output Units by the the core speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel rate is also dependant on quite a few other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to reach the maximum fill rate.