GeForce GTX 285 2GB vs Radeon R7 240

Intro

Compare that to the Radeon R7 240, which has a clock speed of 730 MHz and a DDR3 memory speed of 900 MHz. It also makes use of a 128-bit memory bus, and makes use of a 28 nm design. It is made up of 320 SPUs, 20 TAUs, and 8 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R7 240		30 Watts
GeForce GTX 285 2GB		204 Watts
	Difference: 174 Watts (580%)

Memory Bandwidth

In theory, the GeForce GTX 285 2GB should be 452% quicker than the Radeon R7 240 overall, because of its higher bandwidth. (explain)

GeForce GTX 285 2GB		158976 MB/sec
Radeon R7 240		28800 MB/sec
	Difference: 130176 (452%)

Texel Rate

The GeForce GTX 285 2GB will be a lot (more or less 255%) faster with regards to AF than the Radeon R7 240. (explain)

GeForce GTX 285 2GB		51840 Mtexels/sec
Radeon R7 240		14600 Mtexels/sec
	Difference: 37240 (255%)

Pixel Rate

The GeForce GTX 285 2GB will be quite a bit (approximately 255%) better at full screen anti-aliasing than the Radeon R7 240, and also will be capable of handling higher resolutions while still performing well. (explain)

GeForce GTX 285 2GB		20736 Mpixels/sec
Radeon R7 240		5840 Mpixels/sec
	Difference: 14896 (255%)

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 transported over the external memory interface in one second. The number is worked out by multiplying the card's interface width by its memory clock speed. In the case of DDR RAM, it must be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The higher the memory bandwidth, the faster the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that are processed in one 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 video 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 most pixels that the graphics chip can possibly write to the local memory in one second - measured in millions of pixels per second. The number is calculated by multiplying the amount 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 quite a few other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to reach the max fill rate.