GeForce GTX 285 1GB vs Radeon HD 7750

Intro

Compare all of that to the Radeon HD 7750, which features a clock speed of 800 MHz and a GDDR5 memory speed of 1125 MHz. It also makes use of a 128-bit memory bus, and uses a 28 nm design. It is made up of 512 SPUs, 32 TAUs, and 16 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 7750		55 Watts
GeForce GTX 285 1GB		204 Watts
	Difference: 149 Watts (271%)

Memory Bandwidth

Theoretically speaking, the GeForce GTX 285 1GB should be 121% faster than the Radeon HD 7750 in general, because of its greater data rate. (explain)

GeForce GTX 285 1GB		158976 MB/sec
Radeon HD 7750		72000 MB/sec
	Difference: 86976 (121%)

Texel Rate

The GeForce GTX 285 1GB is a lot (approximately 103%) more effective at anisotropic filtering than the Radeon HD 7750. (explain)

GeForce GTX 285 1GB		51840 Mtexels/sec
Radeon HD 7750		25600 Mtexels/sec
	Difference: 26240 (103%)

Pixel Rate

If running with a high resolution is important to you, then the GeForce GTX 285 1GB is a better choice, and very much so. (explain)

GeForce GTX 285 1GB		20736 Mpixels/sec
Radeon HD 7750		12800 Mpixels/sec
	Difference: 7936 (62%)

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 (counted in megabytes per second) that can be transported past the external memory interface in a second. It's worked out by multiplying the card's bus width by the speed of its memory. In the case of DDR RAM, it should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The better the memory bandwidth, the faster 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 number of texture map elements (texels) that are applied in one second. This number is calculated by multiplying the total number of 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 applied per second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics card could possibly record to the local memory per second - measured in millions of pixels per second. The figure 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 drawing the pixels (image) on the screen. The actual pixel output rate is also dependant on lots of other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to get to the max fill rate.