GeForce GTS 450 vs Radeon HD 5750 1GB

Intro

Compare all that to the Radeon HD 5750 1GB, which uses 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 specific model. It features 720(144x5) SPUs along with 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 450		106 Watts
	Difference: 20 Watts (23%)

Memory Bandwidth

In theory, the Radeon HD 5750 1GB is 27% quicker than the GeForce GTS 450 in general, because of its greater bandwidth. (explain)

Radeon HD 5750 1GB		73600 MB/sec
GeForce GTS 450		57728 MB/sec
	Difference: 15872 (27%)

Texel Rate

The Radeon HD 5750 1GB should be a bit (approximately 1%) better at anisotropic filtering than the GeForce GTS 450. (explain)

Radeon HD 5750 1GB		25200 Mtexels/sec
GeForce GTS 450		25056 Mtexels/sec
	Difference: 144 (1%)

Pixel Rate

If running with a high screen resolution is important to you, then the GeForce GTS 450 is the winner, but not by far. (explain)

GeForce GTS 450		12528 Mpixels/sec
Radeon HD 5750 1GB		11200 Mpixels/sec
	Difference: 1328 (12%)

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: Memory bandwidth is the max amount of data (measured in MB per second) that can be transferred past the external memory interface within a second. It is calculated by multiplying the interface width by the speed of its memory. In the case of DDR type memory, it must be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The better the card's memory bandwidth, the better the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that can be processed per second. This figure is worked out by multiplying the total amount of texture units by the core speed of the chip. The better this number, 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 maximum amount of pixels that the graphics card can possibly write to its local memory in one second - measured in millions of pixels per second. The figure is calculated by multiplying the number of ROPs by the the core 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 lots of other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to get to the max fill rate.