Radeon HD 4830 1GB vs Radeon R9 M375X

Intro

Compare all that to the Radeon R9 M375X, which comes with a core clock speed of 1015 MHz and a GDDR5 memory speed of 1125 MHz. It also makes use of a 128-bit memory bus, and uses a 28 nm design. It is comprised of 640 SPUs, 40 Texture Address Units, and 16 Raster Operation Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Memory Bandwidth

Theoretically speaking, the Radeon R9 M375X should perform much faster than the Radeon HD 4830 1GB in general. (explain)

Radeon R9 M375X		72000 MB/sec
Radeon HD 4830 1GB		57600 MB/sec
	Difference: 14400 (25%)

Texel Rate

The Radeon R9 M375X will be quite a bit (more or less 121%) better at anisotropic filtering than the Radeon HD 4830 1GB. (explain)

Radeon R9 M375X		40600 Mtexels/sec
Radeon HD 4830 1GB		18400 Mtexels/sec
	Difference: 22200 (121%)

Pixel Rate

The Radeon R9 M375X should be much (approximately 77%) better at full screen anti-aliasing than the Radeon HD 4830 1GB, and also should be able to handle higher resolutions without losing too much performance. (explain)

Radeon R9 M375X		16240 Mpixels/sec
Radeon HD 4830 1GB		9200 Mpixels/sec
	Difference: 7040 (77%)

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 information (in units of MB per second) that can be transferred past the external memory interface in a second. It is worked out by multiplying the bus width by its memory speed. In the case of DDR memory, the result should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The higher the card's memory bandwidth, the faster the card will be in general. It especially helps with AA, HDR and high resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that can be processed per second. This figure is worked out by multiplying the total amount of texture units of the card by the core clock 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 applied in a second.

Pixel Rate: Pixel rate is the maximum number of pixels the graphics card can possibly write to the local memory per second - measured in millions of pixels per second. The figure is calculated by multiplying the number of colour ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel rate also depends on lots of other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the ability to get to the maximum fill rate.