Radeon HD 7870 XT vs Radeon R9 M365X

Intro

Compare those specifications to the Radeon R9 M365X, which comes with GPU clock speed of 925 MHz, and 4096 MB of GDDR5 RAM running at 1125 MHz through a 128-bit bus. It also is made up of 640 Stream Processors, 40 Texture Address Units, and 16 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Memory Bandwidth

Theoretically speaking, the Radeon HD 7870 XT will be 167% quicker than the Radeon R9 M365X in general, because of its higher data rate. (explain)

Radeon HD 7870 XT		192000 MB/sec
Radeon R9 M365X		72000 MB/sec
	Difference: 120000 (167%)

Texel Rate

The Radeon HD 7870 XT should be a lot (approximately 140%) faster with regards to AF than the Radeon R9 M365X. (explain)

Radeon HD 7870 XT		88800 Mtexels/sec
Radeon R9 M365X		37000 Mtexels/sec
	Difference: 51800 (140%)

Pixel Rate

If using a high screen resolution is important to you, then the Radeon HD 7870 XT is superior to the Radeon R9 M365X, and very much so. (explain)

Radeon HD 7870 XT		29600 Mpixels/sec
Radeon R9 M365X		14800 Mpixels/sec
	Difference: 14800 (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: Bandwidth is the largest amount of data (counted in MB per second) that can be moved past the external memory interface in one second. It's worked out by multiplying the card's interface width by the speed of its memory. In the case of DDR RAM, it must be multiplied by 2 again. If DDR5, multiply by 4 instead. The better the bandwidth is, the better the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that are processed per second. This number is worked out by multiplying the total amount of texture units of the card by the core clock speed of the chip. The better the texel rate, 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 graphics card can possibly write to the local memory per second - measured in millions of pixels per second. The number is worked out by multiplying the amount of Raster Operations Pipelines by the the core clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill rate also depends on lots of other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to reach the max fill rate.