Radeon HD 5850 vs Radeon R9 M295X

Intro

Compare those specs to the Radeon R9 M295X, which features a GPU core clock speed of 750 MHz, and 4096 MB of GDDR5 RAM running at 1375 MHz through a 256-bit bus. It also features 2048 Stream Processors, 128 TAUs, and 32 Raster Operation Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R9 M295X		125 Watts
Radeon HD 5850		151 Watts
	Difference: 26 Watts (21%)

Memory Bandwidth

In theory, the Radeon R9 M295X should be 38% quicker than the Radeon HD 5850 overall, due to its higher data rate. (explain)

Radeon R9 M295X		176000 MB/sec
Radeon HD 5850		128000 MB/sec
	Difference: 48000 (38%)

Texel Rate

The Radeon R9 M295X is a lot (about 84%) faster with regards to anisotropic filtering than the Radeon HD 5850. (explain)

Radeon R9 M295X		96000 Mtexels/sec
Radeon HD 5850		52200 Mtexels/sec
	Difference: 43800 (84%)

Pixel Rate

The Radeon R9 M295X will be just a bit (about 3%) better at anti-aliasing than the Radeon HD 5850, and capable of handling higher resolutions better. (explain)

Radeon R9 M295X		24000 Mpixels/sec
Radeon HD 5850		23200 Mpixels/sec
	Difference: 800 (3%)

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 (in units of MB per second) that can be transported over the external memory interface in a second. It's worked out by multiplying the card's interface width by its memory clock speed. If the card has DDR type memory, it must be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The better the bandwidth is, the better 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 are processed in one second. This number is calculated by multiplying the total amount of texture units by the core speed of the chip. The better this number, the better the card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in a second.

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics card can possibly write to the local memory in a second - measured in millions of pixels per second. The number is worked out by multiplying the number of colour ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate is also dependant on lots of other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to reach the max fill rate.