GeForce GTX Titan Black vs Radeon HD 4830 512MB

Intro

Compare all that to the Radeon HD 4830 512MB, which uses a 55 nm design. AMD has set the core frequency at 575 MHz. The GDDR3 RAM works at a speed of 900 MHz on this particular model. 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

As far as performance goes, the GeForce GTX Titan Black should theoretically be much superior to the Radeon HD 4830 512MB overall. (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 will be much (approximately 1060%) faster with regards to texture filtering 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 will be quite a bit (approximately 364%) better at full screen anti-aliasing than the Radeon HD 4830 512MB, and also capable of handling higher resolutions while still performing well. (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 max amount of data (in units of megabytes per second) that can be transported past the external memory interface in a second. It's worked out by multiplying the interface width by its memory clock speed. In the case of DDR memory, it must be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The better the card's memory bandwidth, the better 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 can be applied in one 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 a second.

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics chip could possibly record to its local memory in a second - measured in millions of pixels per second. The figure is calculated by multiplying the amount of Render Output Units by the the core speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate is also dependant on many other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the potential to reach the maximum fill rate.