Radeon HD 4830 512MB vs Radeon R9 M370X

Intro

Compare those specifications to the Radeon R9 M370X, which features a core clock frequency of 800 MHz and a GDDR5 memory frequency of 1125 MHz. It also uses a 128-bit memory bus, and uses a 28 nm design. It is made up of 640 SPUs, 40 TAUs, and 16 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

As far as performance goes, the Radeon R9 M370X should theoretically be quite a bit superior to the Radeon HD 4830 512MB overall. (explain)

Radeon R9 M370X		72000 MB/sec
Radeon HD 4830 512MB		57600 MB/sec
	Difference: 14400 (25%)

Texel Rate

The Radeon R9 M370X will be quite a bit (approximately 74%) better at AF than the Radeon HD 4830 512MB. (explain)

Radeon R9 M370X		32000 Mtexels/sec
Radeon HD 4830 512MB		18400 Mtexels/sec
	Difference: 13600 (74%)

Pixel Rate

The Radeon R9 M370X should be a lot (approximately 39%) better at full screen anti-aliasing than the Radeon HD 4830 512MB, and also able to handle higher resolutions without slowing down too much. (explain)

Radeon R9 M370X		12800 Mpixels/sec
Radeon HD 4830 512MB		9200 Mpixels/sec
	Difference: 3600 (39%)

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 largest amount of information (counted in MB per second) that can be moved past 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 RAM, it should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The better the memory bandwidth, 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 texture map elements (texels) that are processed in one second. This number is calculated by multiplying the total 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 amount 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 calculated by multiplying the number of Render Output Units by the the core speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel rate is also dependant on quite a few other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to reach the maximum fill rate.