Radeon HD 4670 1GB vs Radeon R9 M375X

Intro

Compare that to the Radeon R9 M375X, which features a clock speed of 1015 MHz and a GDDR5 memory frequency of 1125 MHz. It also makes use of a 128-bit bus, and uses a 28 nm design. It features 640 SPUs, 40 TAUs, and 16 Raster Operation Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Memory Bandwidth

The Radeon R9 M375X, in theory, should be quite a bit faster than the Radeon HD 4670 1GB in general. (explain)

Radeon R9 M375X		72000 MB/sec
Radeon HD 4670 1GB		35200 MB/sec
	Difference: 36800 (105%)

Texel Rate

The Radeon R9 M375X is much (approximately 69%) faster with regards to AF than the Radeon HD 4670 1GB. (explain)

Radeon R9 M375X		40600 Mtexels/sec
Radeon HD 4670 1GB		24000 Mtexels/sec
	Difference: 16600 (69%)

Pixel Rate

The Radeon R9 M375X should be a lot (approximately 171%) more effective at full screen anti-aliasing than the Radeon HD 4670 1GB, and also able to handle higher screen resolutions while still performing well. (explain)

Radeon R9 M375X		16240 Mpixels/sec
Radeon HD 4670 1GB		6000 Mpixels/sec
	Difference: 10240 (171%)

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 (counted in megabytes per second) that can be transferred over the external memory interface within a second. The number is calculated by multiplying the card's interface width by its memory speed. If the card has DDR type memory, it should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The better the card's memory bandwidth, the better the card will be in general. It especially helps with AA, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that can be applied per second. This is calculated by multiplying the total number of texture units by the core speed of the chip. The higher 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 the video card can possibly write to its local memory per second - measured in millions of pixels per second. The number is calculated by multiplying the number of Render Output Units by the the core clock speed. ROPs (Raster Operations Pipelines - aka 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, especially the memory bandwidth - the lower the memory bandwidth is, the lower the ability to get to the maximum fill rate.