GeForce GTS 250 512MB vs Radeon HD 6750

Intro

Compare those specifications to the Radeon HD 6750, which makes use of a 40 nm design. AMD has clocked the core speed at 725 MHz. The GDDR5 memory runs at a frequency of 1000 MHz on this particular model. It features 720 SPUs as well as 36 TAUs and 16 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 6750		86 Watts
GeForce GTS 250 512MB		145 Watts
	Difference: 59 Watts (69%)

Memory Bandwidth

Theoretically speaking, the GeForce GTS 250 512MB should be 10% quicker than the Radeon HD 6750 overall, because of its greater bandwidth. (explain)

GeForce GTS 250 512MB		70400 MB/sec
Radeon HD 6750		64000 MB/sec
	Difference: 6400 (10%)

Texel Rate

The GeForce GTS 250 512MB will be much (approximately 81%) more effective at texture filtering than the Radeon HD 6750. (explain)

GeForce GTS 250 512MB		47232 Mtexels/sec
Radeon HD 6750		26100 Mtexels/sec
	Difference: 21132 (81%)

Pixel Rate

The GeForce GTS 250 512MB is a bit (approximately 2%) more effective at FSAA than the Radeon HD 6750, and also will be able to handle higher resolutions while still performing well. (explain)

GeForce GTS 250 512MB		11808 Mpixels/sec
Radeon HD 6750		11600 Mpixels/sec
	Difference: 208 (2%)

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 (in units of megabytes per second) that can be transferred across the external memory interface within a second. The number is worked out by multiplying the bus width by its memory clock speed. In the case of DDR RAM, it should be multiplied by 2 again. If DDR5, multiply by 4 instead. The better the card's memory bandwidth, the faster 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 can be processed in one second. This figure is calculated by multiplying the total texture units by the core clock speed of the chip. The better this number, the better the graphics card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in one second.

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics card could possibly record to the local memory in a second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the number of Raster Operations Pipelines by the the card's clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel rate also depends on many other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the potential to reach the max fill rate.