Radeon HD 6790 vs Radeon R7 240

Intro

Compare those specifications to the Radeon R7 240, which comes with core speeds of 730 MHz on the GPU, and 900 MHz on the 2048 MB of DDR3 RAM. It features 320 SPUs as well as 20 TAUs and 8 Rasterization Operator Units.

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

Radeon HD 6790		2150 points
Radeon R7 240		1218 points
	Difference: 932 (77%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R7 240		30 Watts
Radeon HD 6790		150 Watts
	Difference: 120 Watts (400%)

Memory Bandwidth

The Radeon HD 6790, in theory, should be quite a bit faster than the Radeon R7 240 in general. (explain)

Radeon HD 6790		134400 MB/sec
Radeon R7 240		28800 MB/sec
	Difference: 105600 (367%)

Texel Rate

The Radeon HD 6790 will be a lot (more or less 130%) better at texture filtering than the Radeon R7 240. (explain)

Radeon HD 6790		33600 Mtexels/sec
Radeon R7 240		14600 Mtexels/sec
	Difference: 19000 (130%)

Pixel Rate

The Radeon HD 6790 is a lot (approximately 130%) better at AA than the Radeon R7 240, and also will be capable of handling higher resolutions better. (explain)

Radeon HD 6790		13440 Mpixels/sec
Radeon R7 240		5840 Mpixels/sec
	Difference: 7600 (130%)

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 (measured in megabytes per second) that can be moved over the external memory interface in a second. It's worked out by multiplying the card's bus width by its memory speed. If the card has DDR RAM, it should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The higher the bandwidth is, the faster the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that can be applied in one second. This number is worked out by multiplying the total amount 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 in a second.

Pixel Rate: Pixel rate is the maximum amount of pixels the video card can possibly record to its local memory in one second - measured in millions of pixels per second. The number is worked out by multiplying the amount of ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill rate is also dependant on quite a few other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to get to the maximum fill rate.