GeForce GTX Titan vs Radeon HD 5850

Intro

Compare those specs to the Radeon HD 5850, which features a core clock frequency of 725 MHz and a GDDR5 memory speed of 1000 MHz. It also uses a 256-bit bus, and makes use of a 40 nm design. It is made up of 1440(288x5) SPUs, 72 TAUs, and 32 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 5850		151 Watts
GeForce GTX Titan		250 Watts
	Difference: 99 Watts (66%)

Memory Bandwidth

Theoretically speaking, the GeForce GTX Titan is 125% quicker than the Radeon HD 5850 overall, due to its greater data rate. (explain)

GeForce GTX Titan		288384 MB/sec
Radeon HD 5850		128000 MB/sec
	Difference: 160384 (125%)

Texel Rate

The GeForce GTX Titan will be a lot (approximately 259%) faster with regards to texture filtering than the Radeon HD 5850. (explain)

GeForce GTX Titan		187488 Mtexels/sec
Radeon HD 5850		52200 Mtexels/sec
	Difference: 135288 (259%)

Pixel Rate

The GeForce GTX Titan is quite a bit (more or less 73%) more effective at anti-aliasing than the Radeon HD 5850, and also will be able to handle higher resolutions while still performing well. (explain)

GeForce GTX Titan		40176 Mpixels/sec
Radeon HD 5850		23200 Mpixels/sec
	Difference: 16976 (73%)

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 (in units of MB per second) that can be transferred past the external memory interface within a second. It is worked out by multiplying the card's bus width by its memory clock speed. If the card has DDR RAM, the result should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The higher the bandwidth is, the better the card will be in general. It especially helps with AA, 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 figure is calculated by multiplying the total number of texture units by the core speed of the chip. The better this number, the better the graphics 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 most pixels that the graphics card could possibly write to its local memory in a second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the number of colour ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill 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 potential to reach the maximum fill rate.