Radeon HD 7870 XT vs Radeon R7 240

Intro

Compare that to the Radeon R7 240, which comes with a clock frequency of 730 MHz and a DDR3 memory speed of 900 MHz. It also uses a 128-bit bus, and makes use of a 28 nm design. It is comprised of 320 SPUs, 20 TAUs, and 8 Raster Operation 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 7870 XT		6390 points
Radeon R7 240		1218 points
	Difference: 5172 (425%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R7 240		30 Watts
Radeon HD 7870 XT		185 Watts
	Difference: 155 Watts (517%)

Memory Bandwidth

Theoretically speaking, the Radeon HD 7870 XT will be 567% faster than the Radeon R7 240 in general, because of its higher data rate. (explain)

Radeon HD 7870 XT		192000 MB/sec
Radeon R7 240		28800 MB/sec
	Difference: 163200 (567%)

Texel Rate

The Radeon HD 7870 XT will be much (more or less 508%) more effective at anisotropic filtering than the Radeon R7 240. (explain)

Radeon HD 7870 XT		88800 Mtexels/sec
Radeon R7 240		14600 Mtexels/sec
	Difference: 74200 (508%)

Pixel Rate

If using high levels of AA is important to you, then the Radeon HD 7870 XT is superior to the Radeon R7 240, by a large margin. (explain)

Radeon HD 7870 XT		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: Bandwidth is the maximum amount of information (in units of megabytes per second) that can be transferred across the external memory interface within a second. The number is worked out by multiplying the interface width by the speed of its memory. If it uses DDR RAM, it must be multiplied by 2 once again. If DDR5, multiply by 4 instead. The higher 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 can be applied per second. This number is calculated by multiplying the total texture units of the card by the core speed of the chip. The better the texel rate, the better the graphics card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels per second.

Pixel Rate: Pixel rate is the most pixels the graphics card could possibly record to the local memory in a second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the amount of Raster Operations Pipelines 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 fill rate is also dependant on many other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to get to the max fill rate.