Radeon HD 6870 vs Radeon R7 240

Intro

Compare those specs to the Radeon R7 240, which features core 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 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 6870		2870 points
Radeon R7 240		1218 points
	Difference: 1652 (136%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R7 240		30 Watts
Radeon HD 6870		151 Watts
	Difference: 121 Watts (403%)

Memory Bandwidth

The Radeon HD 6870, in theory, should perform much faster than the Radeon R7 240 in general. (explain)

Radeon HD 6870		134400 MB/sec
Radeon R7 240		28800 MB/sec
	Difference: 105600 (367%)

Texel Rate

The Radeon HD 6870 is a lot (more or less 245%) better at anisotropic filtering than the Radeon R7 240. (explain)

Radeon HD 6870		50400 Mtexels/sec
Radeon R7 240		14600 Mtexels/sec
	Difference: 35800 (245%)

Pixel Rate

The Radeon HD 6870 should be a lot (about 393%) better at AA than the Radeon R7 240, and capable of handling higher resolutions without losing too much performance. (explain)

Radeon HD 6870		28800 Mpixels/sec
Radeon R7 240		5840 Mpixels/sec
	Difference: 22960 (393%)

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 largest amount of information (counted in megabytes per second) that can be transported past the external memory interface within a second. It is worked out by multiplying the interface width by its memory speed. If the card has DDR memory, it should be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The higher the memory bandwidth, 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 processed per second. This figure 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 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 graphics card can possibly write to its local memory per second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate also depends on quite a few other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the ability to get to the max fill rate.