GeForce GTX 285 1GB vs Radeon R7 240

Intro

Compare those specs to the Radeon R7 240, which features a clock speed of 730 MHz and a DDR3 memory frequency of 900 MHz. It also uses a 128-bit bus, and uses a 28 nm design. It features 320 SPUs, 20 TAUs, and 8 Raster Operation Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R7 240		30 Watts
GeForce GTX 285 1GB		204 Watts
	Difference: 174 Watts (580%)

Memory Bandwidth

Theoretically speaking, the GeForce GTX 285 1GB should be 452% faster than the Radeon R7 240 in general, due to its greater data rate. (explain)

GeForce GTX 285 1GB		158976 MB/sec
Radeon R7 240		28800 MB/sec
	Difference: 130176 (452%)

Texel Rate

The GeForce GTX 285 1GB will be quite a bit (more or less 255%) more effective at AF than the Radeon R7 240. (explain)

GeForce GTX 285 1GB		51840 Mtexels/sec
Radeon R7 240		14600 Mtexels/sec
	Difference: 37240 (255%)

Pixel Rate

The GeForce GTX 285 1GB is quite a bit (approximately 255%) more effective at FSAA than the Radeon R7 240, and able to handle higher screen resolutions without losing too much performance. (explain)

GeForce GTX 285 1GB		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: Memory bandwidth is the maximum amount of data (counted in MB per second) that can be transported over the external memory interface in a second. It is worked out by multiplying the bus width by its memory speed. In the case of DDR RAM, it must be multiplied by 2 once again. If DDR5, multiply by 4 instead. The higher the card's memory bandwidth, the faster 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 amount of texture map elements (texels) that are processed per 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 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 maximum amount of pixels that the graphics chip could possibly record to its local memory per second - measured in millions of pixels per second. The figure is worked out by multiplying the number of colour ROPs 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 many 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.