GeForce GTX 965M vs Radeon HD 4830 512MB

Intro

Compare all of that to the Radeon HD 4830 512MB, which features clock speeds of 575 MHz on the GPU, and 900 MHz on the 512 MB of GDDR3 RAM. It features 640(128x5) SPUs as well as 32 TAUs and 16 Rasterization Operator Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 965M		60 Watts
Radeon HD 4830 512MB		95 Watts
	Difference: 35 Watts (58%)

Memory Bandwidth

Theoretically speaking, the GeForce GTX 965M should be a little bit faster than the Radeon HD 4830 512MB overall. (explain)

GeForce GTX 965M		64000 MB/sec
Radeon HD 4830 512MB		57600 MB/sec
	Difference: 6400 (11%)

Texel Rate

The GeForce GTX 965M should be quite a bit (about 228%) more effective at AF than the Radeon HD 4830 512MB. (explain)

GeForce GTX 965M		60416 Mtexels/sec
Radeon HD 4830 512MB		18400 Mtexels/sec
	Difference: 42016 (228%)

Pixel Rate

If running with high levels of AA is important to you, then the GeForce GTX 965M is the winner, and very much so. (explain)

GeForce GTX 965M		30208 Mpixels/sec
Radeon HD 4830 512MB		9200 Mpixels/sec
	Difference: 21008 (228%)

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 data (counted in MB per second) that can be moved across the external memory interface in one second. The number is calculated by multiplying the card's interface width by the speed of its memory. If it uses DDR memory, it must be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The better the bandwidth is, 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 applied in one second. This figure is calculated by multiplying the total number of texture units of the card by the core clock 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 applied in one second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics card could possibly record to the local memory in a second - measured in millions of pixels per second. The figure is worked out by multiplying the amount of colour ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel output 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 max fill rate.