Radeon HD 7870 vs Radeon R7 250X

Intro

Compare all that to the Radeon R7 250X, which has a GPU core clock speed of 1000 MHz, and 1024 MB of GDDR5 memory running at 1125 MHz through a 128-bit bus. It also is made up of 640 Stream Processors, 40 Texture Address Units, and 16 Raster Operation Units.

Display Graphs

Hide Graphs

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 250X		2860 points
	Difference: 3370 (118%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R7 250X		95 Watts
Radeon HD 7870		175 Watts
	Difference: 80 Watts (84%)

Memory Bandwidth

As far as performance goes, the Radeon HD 7870 should in theory be quite a bit better than the Radeon R7 250X in general. (explain)

Radeon HD 7870		153600 MB/sec
Radeon R7 250X		72000 MB/sec
	Difference: 81600 (113%)

Texel Rate

The Radeon HD 7870 will be much (more or less 100%) faster with regards to texture filtering than the Radeon R7 250X. (explain)

Radeon HD 7870		80000 Mtexels/sec
Radeon R7 250X		40000 Mtexels/sec
	Difference: 40000 (100%)

Pixel Rate

If running with a high resolution is important to you, then the Radeon HD 7870 is the winner, by a large margin. (explain)

Radeon HD 7870		32000 Mpixels/sec
Radeon R7 250X		16000 Mpixels/sec
	Difference: 16000 (100%)

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 largest amount of information (in units of MB per second) that can be transported past the external memory interface in one second. It's worked out by multiplying the interface width by its memory clock speed. In the case of DDR type memory, it should be multiplied by 2 again. If DDR5, multiply by 4 instead. The higher the bandwidth is, the faster the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that can be applied per second. This figure is worked out by multiplying the total number of texture units by the core clock speed of the chip. The better this number, the better the video card will be at handling 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 that the graphics chip could possibly record to the local memory per second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of colour ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate also depends on lots of other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the ability to reach the max fill rate.