GeForce GTX Titan vs Radeon R9 M395X

Intro

Compare all of that to the Radeon R9 M395X, which has a core clock frequency of 723 MHz and a GDDR5 memory frequency of 1250 MHz. It also features a 256-bit memory bus, and uses a 28 nm design. It is made up of 2048 SPUs, 128 TAUs, and 32 Raster Operation Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R9 M395X		125 Watts
GeForce GTX Titan		250 Watts
	Difference: 125 Watts (100%)

Memory Bandwidth

Theoretically speaking, the GeForce GTX Titan should be a lot faster than the Radeon R9 M395X in general. (explain)

GeForce GTX Titan		288384 MB/sec
Radeon R9 M395X		160000 MB/sec
	Difference: 128384 (80%)

Texel Rate

The GeForce GTX Titan is quite a bit (approximately 103%) faster with regards to anisotropic filtering than the Radeon R9 M395X. (explain)

GeForce GTX Titan		187488 Mtexels/sec
Radeon R9 M395X		92544 Mtexels/sec
	Difference: 94944 (103%)

Pixel Rate

The GeForce GTX Titan will be much (about 74%) faster with regards to full screen anti-aliasing than the Radeon R9 M395X, and should be capable of handling higher resolutions without losing too much performance. (explain)

GeForce GTX Titan		40176 Mpixels/sec
Radeon R9 M395X		23136 Mpixels/sec
	Difference: 17040 (74%)

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 maximum amount of data (in units of MB per second) that can be transported past the external memory interface in one second. It is calculated by multiplying the interface width by the speed of its memory. If the card has DDR RAM, it should be multiplied by 2 again. If DDR5, multiply by 4 instead. The higher the card's memory bandwidth, the faster the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that can be processed per second. This figure is calculated by multiplying the total amount of texture units of the card by the core speed of the chip. The better this number, the better the 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 that the graphics card can possibly record to the local memory in a second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the number of Raster Operations Pipelines 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 lots of other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to reach the max fill rate.