GeForce GTX 660 vs Radeon R7 240

Intro

Compare all 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 features 320 SPUs, 20 TAUs, and 8 ROPs.

Display Graphs

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Benchmarks

These are real-world performance benchmarks that were submitted by Hardware Compare users. The scores seen here are the average of all benchmarks submitted for each respective test and hardware.

3DMark Fire Strike Graphics Score

GeForce GTX 660		5063 points
Radeon R7 240		1218 points
	Difference: 3845 (316%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R7 240		30 Watts
GeForce GTX 660		140 Watts
	Difference: 110 Watts (367%)

Memory Bandwidth

In theory, the GeForce GTX 660 will be 401% quicker than the Radeon R7 240 overall, due to its greater bandwidth. (explain)

GeForce GTX 660		144192 MB/sec
Radeon R7 240		28800 MB/sec
	Difference: 115392 (401%)

Texel Rate

The GeForce GTX 660 is a lot (more or less 437%) better at texture filtering than the Radeon R7 240. (explain)

GeForce GTX 660		78400 Mtexels/sec
Radeon R7 240		14600 Mtexels/sec
	Difference: 63800 (437%)

Pixel Rate

The GeForce GTX 660 will be much (approximately 303%) more effective at FSAA than the Radeon R7 240, and also capable of handling higher screen resolutions without losing too much performance. (explain)

GeForce GTX 660		23520 Mpixels/sec
Radeon R7 240		5840 Mpixels/sec
	Difference: 17680 (303%)

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 data (counted in MB per second) that can be moved over the external memory interface in one second. It's worked out by multiplying the interface width by its memory clock speed. If it uses DDR RAM, it must be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The better the bandwidth is, the faster the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that can be applied per second. This is worked out by multiplying the total amount of texture units by the core speed of the chip. The higher the texel rate, the better the graphics card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed per second.

Pixel Rate: Pixel rate is the maximum number of pixels the video card could possibly record to its local memory in one second - measured in millions of pixels per second. The figure is worked out by multiplying the amount of Raster Operations Pipelines by the the core 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 rate is also dependant on many other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the ability to reach the maximum fill rate.