Radeon HD 4850 512MB vs Radeon R9 M375

Intro

Compare all of that to the Radeon R9 M375, which comes with a GPU core clock speed of 1015 MHz, and 4096 MB of DDR3 memory set to run at 1100 MHz through a 128-bit bus. It also features 640 SPUs, 40 Texture Address Units, and 16 Raster Operation Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Memory Bandwidth

In theory, the Radeon HD 4850 512MB is 81% quicker than the Radeon R9 M375 in general, because of its higher bandwidth. (explain)

Radeon HD 4850 512MB		63552 MB/sec
Radeon R9 M375		35200 MB/sec
	Difference: 28352 (81%)

Texel Rate

The Radeon R9 M375 should be a lot (approximately 62%) faster with regards to AF than the Radeon HD 4850 512MB. (explain)

Radeon R9 M375		40600 Mtexels/sec
Radeon HD 4850 512MB		25000 Mtexels/sec
	Difference: 15600 (62%)

Pixel Rate

If using a high resolution is important to you, then the Radeon R9 M375 is the winner, and very much so. (explain)

Radeon R9 M375		16240 Mpixels/sec
Radeon HD 4850 512MB		10000 Mpixels/sec
	Difference: 6240 (62%)

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 megabytes per second) that can be moved past the external memory interface in one second. The number is worked out by multiplying the interface width by the speed of its memory. If it uses DDR memory, it should be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The higher the bandwidth is, the faster the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.

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

Pixel Rate: Pixel rate is the maximum amount of pixels the video card could possibly record to the local memory in a 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 speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate is also dependant on lots of other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the ability to reach the max fill rate.