Radeon HD 4830 512MB vs Radeon R7 370 2G

Intro

Compare that to the Radeon R7 370 2G, which has GPU core speed of 975 MHz, and 2048 MB of GDDR5 memory running at 1400 MHz through a 256-bit bus. It also is comprised of 1024 Stream Processors, 64 Texture Address Units, and 32 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 4830 512MB		95 Watts
Radeon R7 370 2G		110 Watts
	Difference: 15 Watts (16%)

Memory Bandwidth

Theoretically, the Radeon R7 370 2G should perform a lot faster than the Radeon HD 4830 512MB overall. (explain)

Radeon R7 370 2G		179200 MB/sec
Radeon HD 4830 512MB		57600 MB/sec
	Difference: 121600 (211%)

Texel Rate

The Radeon R7 370 2G should be a lot (about 239%) faster with regards to AF than the Radeon HD 4830 512MB. (explain)

Radeon R7 370 2G		62400 Mtexels/sec
Radeon HD 4830 512MB		18400 Mtexels/sec
	Difference: 44000 (239%)

Pixel Rate

The Radeon R7 370 2G will be quite a bit (more or less 239%) more effective at anti-aliasing than the Radeon HD 4830 512MB, and also will be capable of handling higher resolutions better. (explain)

Radeon R7 370 2G		31200 Mpixels/sec
Radeon HD 4830 512MB		9200 Mpixels/sec
	Difference: 22000 (239%)

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 max amount of data (measured in MB per second) that can be moved across the external memory interface in one second. It's worked out by multiplying the card's interface width by the speed of its memory. If it uses DDR type RAM, the result should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The higher 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 amount of texture map elements (texels) that can be applied per second. This figure is calculated by multiplying the total texture units by the core speed of the chip. The better the texel rate, the better the graphics card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed per second.

Pixel Rate: Pixel rate is the most pixels the graphics card could possibly record to the local memory in one second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the amount of Render Output Units by the the core speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate also depends on many other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the potential to get to the max fill rate.