GeForce GTX 960 vs Radeon HD 4830 512MB

Intro

Compare all that to the Radeon HD 4830 512MB, which has a clock speed of 575 MHz and a GDDR3 memory speed of 900 MHz. It also features a 256-bit bus, and makes use of a 55 nm design. It is made up of 640(128x5) SPUs, 32 TAUs, and 16 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 4830 512MB		95 Watts
GeForce GTX 960		120 Watts
	Difference: 25 Watts (26%)

Memory Bandwidth

Theoretically, the GeForce GTX 960 should be a lot faster than the Radeon HD 4830 512MB in general. (explain)

GeForce GTX 960		112000 MB/sec
Radeon HD 4830 512MB		57600 MB/sec
	Difference: 54400 (94%)

Texel Rate

The GeForce GTX 960 is quite a bit (approximately 292%) better at texture filtering than the Radeon HD 4830 512MB. (explain)

GeForce GTX 960		72128 Mtexels/sec
Radeon HD 4830 512MB		18400 Mtexels/sec
	Difference: 53728 (292%)

Pixel Rate

The GeForce GTX 960 is quite a bit (approximately 292%) faster with regards to AA than the Radeon HD 4830 512MB, and able to handle higher resolutions better. (explain)

GeForce GTX 960		36064 Mpixels/sec
Radeon HD 4830 512MB		9200 Mpixels/sec
	Difference: 26864 (292%)

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 across the external memory interface in a second. It's calculated by multiplying the interface width by the speed of its memory. In the case of DDR type RAM, it should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The better the 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 applied per second. This figure is worked out by multiplying the total number of texture units by the core clock speed of the chip. The higher this number, the better the card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in one 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 colour ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel rate also depends on many other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the potential to reach the max fill rate.