GeForce GTX Titan Black vs Radeon HD 4830 512MB

Intro

Compare those specifications to the Radeon HD 4830 512MB, which features core clock speeds of 575 MHz on the GPU, and 900 MHz on the 512 MB of GDDR3 memory. It features 640(128x5) SPUs as well as 32 Texture Address Units and 16 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 4830 512MB		95 Watts
GeForce GTX Titan Black		250 Watts
	Difference: 155 Watts (163%)

Memory Bandwidth

In theory, the GeForce GTX Titan Black should be 483% faster than the Radeon HD 4830 512MB in general, due to its higher bandwidth. (explain)

GeForce GTX Titan Black		336000 MB/sec
Radeon HD 4830 512MB		57600 MB/sec
	Difference: 278400 (483%)

Texel Rate

The GeForce GTX Titan Black should be a lot (approximately 1060%) better at AF than the Radeon HD 4830 512MB. (explain)

GeForce GTX Titan Black		213360 Mtexels/sec
Radeon HD 4830 512MB		18400 Mtexels/sec
	Difference: 194960 (1060%)

Pixel Rate

The GeForce GTX Titan Black is quite a bit (approximately 364%) more effective at AA than the Radeon HD 4830 512MB, and should be able to handle higher resolutions more effectively. (explain)

GeForce GTX Titan Black		42672 Mpixels/sec
Radeon HD 4830 512MB		9200 Mpixels/sec
	Difference: 33472 (364%)

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 (measured in megabytes per second) that can be moved across the external memory interface in one second. It's calculated by multiplying the card's bus width by its memory speed. If the card has DDR type memory, it must be multiplied by 2 again. If DDR5, multiply by 4 instead. The better the card's memory bandwidth, the faster the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

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

Pixel Rate: Pixel rate is the maximum number of pixels the video card can possibly record to its local memory per second - measured in millions of pixels per second. The number is worked out by multiplying the number of Raster Operations Pipelines by the the core speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate also depends on many other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the ability to get to the max fill rate.