Radeon R9 M395X vs Radeon RX 480

Intro

Compare those specs to the Radeon RX 480, which features a clock frequency of 1120 MHz and a GDDR5 memory speed of 2000 MHz. It also makes use of a 256-bit memory bus, and makes use of a 14 nm design. It is comprised of 2304 SPUs, 144 TAUs, and 32 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R9 M395X		125 Watts
Radeon RX 480		150 Watts
	Difference: 25 Watts (20%)

Memory Bandwidth

The Radeon RX 480 should theoretically perform much faster than the Radeon R9 M395X in general. (explain)

Radeon RX 480		262144 MB/sec
Radeon R9 M395X		160000 MB/sec
	Difference: 102144 (64%)

Texel Rate

The Radeon RX 480 is much (more or less 74%) better at AF than the Radeon R9 M395X. (explain)

Radeon RX 480		161280 Mtexels/sec
Radeon R9 M395X		92544 Mtexels/sec
	Difference: 68736 (74%)

Pixel Rate

If using high levels of AA is important to you, then the Radeon RX 480 is the winner, by a large margin. (explain)

Radeon RX 480		35840 Mpixels/sec
Radeon R9 M395X		23136 Mpixels/sec
	Difference: 12704 (55%)

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 maximum amount of data (measured in MB per second) that can be transferred across the external memory interface in a second. It is worked out by multiplying the bus width by the speed of its memory. In the case of DDR memory, it must be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The better the card's memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that are processed per second. This is worked out by multiplying the total texture units of the card by the core speed of the chip. The better 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 one second.

Pixel Rate: Pixel rate is the most pixels the video card could possibly write to its local memory in one second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the number of colour ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel rate is also dependant on quite a few other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the potential to reach the max fill rate.