Radeon HD 7970 vs Radeon R7 240

Intro

Compare that to the Radeon R7 240, which features clock speeds of 730 MHz on the GPU, and 900 MHz on the 2048 MB of DDR3 memory. It features 320 SPUs as well as 20 Texture Address Units 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

Radeon HD 7970		8225 points
Radeon R7 240		1218 points
	Difference: 7007 (575%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R7 240		30 Watts
Radeon HD 7970		250 Watts
	Difference: 220 Watts (733%)

Memory Bandwidth

The Radeon HD 7970 should in theory be a lot faster than the Radeon R7 240 overall. (explain)

Radeon HD 7970		264000 MB/sec
Radeon R7 240		28800 MB/sec
	Difference: 235200 (817%)

Texel Rate

The Radeon HD 7970 will be much (about 711%) more effective at texture filtering than the Radeon R7 240. (explain)

Radeon HD 7970		118400 Mtexels/sec
Radeon R7 240		14600 Mtexels/sec
	Difference: 103800 (711%)

Pixel Rate

The Radeon HD 7970 will be much (approximately 407%) faster with regards to full screen anti-aliasing than the Radeon R7 240, and also will be capable of handling higher resolutions better. (explain)

Radeon HD 7970		29600 Mpixels/sec
Radeon R7 240		5840 Mpixels/sec
	Difference: 23760 (407%)

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 information (counted in MB per second) that can be moved past the external memory interface in a second. It's calculated by multiplying the card's bus width by its memory speed. In the case of DDR type memory, the result should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The better the card's memory bandwidth, 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 amount of texture map elements (texels) that are applied per second. This figure is calculated by multiplying the total number of texture units of the card by the core clock speed of the chip. The better the texel rate, the better the 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 number of pixels the graphics card can possibly record to the 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 card's clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel rate also depends on quite a few other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to reach the max fill rate.