GeForce GTX Titan Black vs Radeon HD 4850 512MB

Intro

Compare those specs to the Radeon HD 4850 512MB, which uses a 55 nm design. AMD has set the core frequency at 625 MHz. The GDDR3 memory is set to run at a frequency of 993 MHz on this card. It features 800(160x5) SPUs along with 40 Texture Address Units and 16 Rasterization Operator 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 is 429% faster than the Radeon HD 4850 512MB in general, 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 is quite a bit (about 753%) better 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

The GeForce GTX Titan Black should be a lot (approximately 327%) faster with regards to AA than the Radeon HD 4850 512MB, and will be capable of handling higher screen resolutions without losing too much performance. (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: Bandwidth is the largest amount of data (counted in MB per second) that can be transported over the external memory interface in a second. The number is calculated by multiplying the interface width by its memory clock speed. If the card has DDR type RAM, it should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The higher the bandwidth is, the better 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 in one second. This number is worked out by multiplying the total texture units by the core speed of the chip. The higher this number, the better the card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in a second.

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