Radeon HD 7950 3GB vs Radeon R7 240

Intro

Compare those specs to the Radeon R7 240, which has core clock speeds of 730 MHz on the GPU, and 900 MHz on the 2048 MB of DDR3 memory. It features 320 SPUs along with 20 TAUs and 8 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R7 240		30 Watts
Radeon HD 7950 3GB		200 Watts
	Difference: 170 Watts (567%)

Memory Bandwidth

As far as performance goes, the Radeon HD 7950 3GB should in theory be quite a bit better than the Radeon R7 240 in general. (explain)

Radeon HD 7950 3GB		240000 MB/sec
Radeon R7 240		28800 MB/sec
	Difference: 211200 (733%)

Texel Rate

The Radeon HD 7950 3GB will be much (about 514%) more effective at texture filtering than the Radeon R7 240. (explain)

Radeon HD 7950 3GB		89600 Mtexels/sec
Radeon R7 240		14600 Mtexels/sec
	Difference: 75000 (514%)

Pixel Rate

The Radeon HD 7950 3GB should be quite a bit (approximately 338%) faster with regards to full screen anti-aliasing than the Radeon R7 240, and will be able to handle higher screen resolutions while still performing well. (explain)

Radeon HD 7950 3GB		25600 Mpixels/sec
Radeon R7 240		5840 Mpixels/sec
	Difference: 19760 (338%)

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 (in units of megabytes per second) that can be transferred over the external memory interface within a second. It's worked out by multiplying the card's interface width by its memory speed. If the card has DDR memory, it must be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The better the bandwidth is, the better the card will be in general. It especially helps with AA, HDR and high resolutions.

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

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics card could possibly write to its local memory in one second - measured in millions of pixels per second. The number is worked out by multiplying the number of Render Output Units by the the card's clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel output rate is also dependant on quite a few other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the ability to reach the max fill rate.