Radeon HD 4830 1GB vs Radeon R7 370 4G

Intro

Compare those specs to the Radeon R7 370 4G, which makes use of a 28 nm design. AMD has set the core speed at 975 MHz. The GDDR5 memory is set to run at a speed of 1400 MHz on this particular card. It features 1024 SPUs along with 64 TAUs and 32 Rasterization Operator Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 4830 1GB		95 Watts
Radeon R7 370 4G		110 Watts
	Difference: 15 Watts (16%)

Memory Bandwidth

Theoretically speaking, the Radeon R7 370 4G should perform a lot faster than the Radeon HD 4830 1GB in general. (explain)

Radeon R7 370 4G		179200 MB/sec
Radeon HD 4830 1GB		57600 MB/sec
	Difference: 121600 (211%)

Texel Rate

The Radeon R7 370 4G is much (more or less 239%) more effective at anisotropic filtering than the Radeon HD 4830 1GB. (explain)

Radeon R7 370 4G		62400 Mtexels/sec
Radeon HD 4830 1GB		18400 Mtexels/sec
	Difference: 44000 (239%)

Pixel Rate

If using lots of anti-aliasing is important to you, then the Radeon R7 370 4G is a better choice, and very much so. (explain)

Radeon R7 370 4G		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: Memory bandwidth is the max amount of information (measured in megabytes per second) that can be moved over the external memory interface in a second. It is worked out by multiplying the interface width by its memory clock speed. If the card has DDR type RAM, it must be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The better the card's memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that are processed per second. This number is worked out by multiplying the total texture units by the core speed of the chip. The better this number, the better the video card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels in one second.

Pixel Rate: Pixel rate is the most pixels the graphics card can possibly write to the local memory in one second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the number of colour ROPs by the the core clock speed. 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 fill rate also depends on lots of other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to get to the maximum fill rate.