Radeon HD 7870 XT vs Radeon R7 240

Intro

Compare those specs to the Radeon R7 240, which makes use of a 28 nm design. AMD has clocked the core frequency at 730 MHz. The DDR3 memory works at a speed of 900 MHz on this particular model. It features 320 SPUs along with 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 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

In theory, the Radeon HD 7870 XT is 567% quicker than the Radeon R7 240 in general, because of its greater 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 (about 508%) faster with regards to texture 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 a high resolution is important to you, then the Radeon HD 7870 XT is the winner, by far. (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 max amount of data (counted in megabytes per second) that can be transported across the external memory interface in one second. It's calculated by multiplying the card's bus width by its memory speed. If the card has DDR memory, it should be multiplied by 2 again. If DDR5, multiply by 4 instead. 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 texture map elements (texels) that are processed per second. This figure is calculated by multiplying the total texture units by the core 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 per second.

Pixel Rate: Pixel rate is the maximum number of pixels the video card can possibly write to its local memory in a second - measured in millions of pixels per second. The figure is calculated by multiplying the number of ROPs by the the core speed of the card. 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 also depends 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 max fill rate.