GeForce GTX Titan Black vs Radeon HD 4850 512MB

Intro

Compare those specifications to the Radeon HD 4850 512MB, which has a core clock speed of 625 MHz and a GDDR3 memory speed of 993 MHz. It also uses a 256-bit bus, and uses a 55 nm design. It is comprised of 800(160x5) SPUs, 40 Texture Address Units, and 16 Raster Operation Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 4850 512MB		110 Watts
GeForce GTX Titan Black		250 Watts
	Difference: 140 Watts (127%)

Memory Bandwidth

Theoretically speaking, the GeForce GTX Titan Black should be 429% quicker than the Radeon HD 4850 512MB overall, because of its greater data rate. (explain)

GeForce GTX Titan Black		336000 MB/sec
Radeon HD 4850 512MB		63552 MB/sec
	Difference: 272448 (429%)

Texel Rate

The GeForce GTX Titan Black will be quite a bit (more or less 753%) more effective at texture filtering than the Radeon HD 4850 512MB. (explain)

GeForce GTX Titan Black		213360 Mtexels/sec
Radeon HD 4850 512MB		25000 Mtexels/sec
	Difference: 188360 (753%)

Pixel Rate

If using lots of anti-aliasing is important to you, then the GeForce GTX Titan Black is a better choice, by far. (explain)

GeForce GTX Titan Black		42672 Mpixels/sec
Radeon HD 4850 512MB		10000 Mpixels/sec
	Difference: 32672 (327%)

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 (measured in MB per second) that can be transferred past the external memory interface in one second. It is worked out by multiplying the interface width by its memory clock speed. If it uses DDR type memory, it should be multiplied by 2 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 anti-aliasing, HDR and high resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that can be 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 this number, the better the graphics card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels per second.

Pixel Rate: Pixel rate is the most pixels the video card can possibly write to the local memory per second - measured in millions of pixels per second. The figure is calculated by multiplying the amount of ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output rate also depends on many other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the ability to reach the maximum fill rate.