Radeon HD 7870 vs Radeon R7 240

Intro

Compare those specs to the Radeon R7 240, which makes use of a 28 nm design. AMD has set the core frequency at 730 MHz. The DDR3 memory is set to run at a frequency of 900 MHz on this card. 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 7870		6230 points
Radeon R7 240		1218 points
	Difference: 5012 (411%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R7 240		30 Watts
Radeon HD 7870		175 Watts
	Difference: 145 Watts (483%)

Memory Bandwidth

The Radeon HD 7870 should in theory perform quite a bit faster than the Radeon R7 240 in general. (explain)

Radeon HD 7870		153600 MB/sec
Radeon R7 240		28800 MB/sec
	Difference: 124800 (433%)

Texel Rate

The Radeon HD 7870 is a lot (approximately 448%) better at texture filtering than the Radeon R7 240. (explain)

Radeon HD 7870		80000 Mtexels/sec
Radeon R7 240		14600 Mtexels/sec
	Difference: 65400 (448%)

Pixel Rate

If using a high screen resolution is important to you, then the Radeon HD 7870 is superior to the Radeon R7 240, by far. (explain)

Radeon HD 7870		32000 Mpixels/sec
Radeon R7 240		5840 Mpixels/sec
	Difference: 26160 (448%)

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 max amount of data (measured in megabytes per second) that can be transported over the external memory interface in one second. It is worked out by multiplying the card's bus width by the speed of its memory. If the card has DDR memory, it must be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The higher the bandwidth is, the better the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that can be applied in one second. This is worked out by multiplying the total number of texture units by the core speed of the chip. The higher the texel rate, the better the video card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels in a second.

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics card can possibly record to the local memory per second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the amount of colour ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill rate also depends on many other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to get to the maximum fill rate.