Radeon HD 4830 1GB vs Radeon R7 370 2G

Intro

Compare that to the Radeon R7 370 2G, which has a core clock frequency of 975 MHz and a GDDR5 memory frequency of 1400 MHz. It also makes use of a 256-bit bus, and uses a 28 nm design. It is made up of 1024 SPUs, 64 Texture Address Units, and 32 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 4830 1GB		95 Watts
Radeon R7 370 2G		110 Watts
	Difference: 15 Watts (16%)

Memory Bandwidth

Theoretically speaking, the Radeon R7 370 2G should be 211% faster than the Radeon HD 4830 1GB overall, due to its greater bandwidth. (explain)

Radeon R7 370 2G		179200 MB/sec
Radeon HD 4830 1GB		57600 MB/sec
	Difference: 121600 (211%)

Texel Rate

The Radeon R7 370 2G will be a lot (more or less 239%) faster with regards to anisotropic filtering than the Radeon HD 4830 1GB. (explain)

Radeon R7 370 2G		62400 Mtexels/sec
Radeon HD 4830 1GB		18400 Mtexels/sec
	Difference: 44000 (239%)

Pixel Rate

The Radeon R7 370 2G will be a lot (approximately 239%) more effective at anti-aliasing than the Radeon HD 4830 1GB, and also able to handle higher resolutions better. (explain)

Radeon R7 370 2G		31200 Mpixels/sec
Radeon HD 4830 1GB		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: Bandwidth is the largest amount of data (in units of megabytes per second) that can be transferred over the external memory interface in a second. It's worked out by multiplying the interface width by its memory clock speed. If the card has DDR type memory, the result 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 high resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that can be applied per second. This number is worked out by multiplying the total amount of texture units of the card by the core clock speed of the chip. The higher this number, 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 maximum amount of pixels that the graphics chip can possibly record to the local memory per second - measured in millions of pixels per second. The number is calculated by multiplying the number of colour ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - also called 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, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to reach the maximum fill rate.