Radeon HD 7870 XT vs Radeon R9 M370X

Intro

Compare all of that to the Radeon R9 M370X, which comes with a core clock speed of 800 MHz and a GDDR5 memory speed of 1125 MHz. It also makes use of a 128-bit bus, and uses a 28 nm design. It is made up of 640 SPUs, 40 Texture Address Units, and 16 Raster Operation Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Memory Bandwidth

The Radeon HD 7870 XT should in theory be much faster than the Radeon R9 M370X overall. (explain)

Radeon HD 7870 XT		192000 MB/sec
Radeon R9 M370X		72000 MB/sec
	Difference: 120000 (167%)

Texel Rate

The Radeon HD 7870 XT will be quite a bit (about 178%) faster with regards to texture filtering than the Radeon R9 M370X. (explain)

Radeon HD 7870 XT		88800 Mtexels/sec
Radeon R9 M370X		32000 Mtexels/sec
	Difference: 56800 (178%)

Pixel Rate

If using high levels of AA is important to you, then the Radeon HD 7870 XT is superior to the Radeon R9 M370X, and very much so. (explain)

Radeon HD 7870 XT		29600 Mpixels/sec
Radeon R9 M370X		12800 Mpixels/sec
	Difference: 16800 (131%)

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 MB per second) that can be moved across the external memory interface within a second. It is worked out by multiplying the interface width by the speed of its memory. In the case of DDR RAM, it must be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The higher the bandwidth is, the better the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that are processed per second. This number is calculated by multiplying the total amount of texture units of the card by the core speed of the chip. The higher this number, the better the graphics card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in one second.

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