GeForce GT 240 GDDR5 vs Radeon R9 280X

Intro

Compare all of that to the Radeon R9 280X, which uses a 28 nm design. AMD has clocked the core frequency at 850 MHz. The GDDR5 RAM is set to run at a speed of 1500 MHz on this particular model. It features 2048 SPUs as well as 128 TAUs and 32 Rasterization Operator Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 240 GDDR5		70 Watts
Radeon R9 280X		250 Watts
	Difference: 180 Watts (257%)

Memory Bandwidth

Performance-wise, the Radeon R9 280X should theoretically be a lot superior to the GeForce GT 240 GDDR5 overall. (explain)

Radeon R9 280X		288000 MB/sec
GeForce GT 240 GDDR5		54400 MB/sec
	Difference: 233600 (429%)

Texel Rate

The Radeon R9 280X is much (approximately 518%) better at AF than the GeForce GT 240 GDDR5. (explain)

Radeon R9 280X		108800 Mtexels/sec
GeForce GT 240 GDDR5		17600 Mtexels/sec
	Difference: 91200 (518%)

Pixel Rate

The Radeon R9 280X will be much (about 518%) better at FSAA than the GeForce GT 240 GDDR5, and also should be able to handle higher screen resolutions without slowing down too much. (explain)

Radeon R9 280X		27200 Mpixels/sec
GeForce GT 240 GDDR5		4400 Mpixels/sec
	Difference: 22800 (518%)

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 information (counted in MB per second) that can be transferred over the external memory interface in one second. It is calculated by multiplying the card's bus width by the speed of its memory. In the case of DDR type memory, it must be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The better the memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that can be processed per second. This is calculated by multiplying the total texture units by the core speed of the chip. The higher the texel rate, the better the 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 the graphics card could possibly record to its local memory in a second - measured in millions of pixels per second. The figure is calculated by multiplying the amount of Render Output Units by the the core clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate is also dependant on many other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the potential to reach the maximum fill rate.