GeForce GTX Titan Black vs Radeon HD 4850 1GB

Intro

Compare those specs to the Radeon HD 4850 1GB, which features a clock speed of 625 MHz and a GDDR4 memory speed of 993 MHz. It also uses a 256-bit memory bus, and uses a 55 nm design. It is comprised of 800(160x5) SPUs, 40 TAUs, and 16 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 4850 1GB		110 Watts
GeForce GTX Titan Black		250 Watts
	Difference: 140 Watts (127%)

Memory Bandwidth

As far as performance goes, the GeForce GTX Titan Black should in theory be much better than the Radeon HD 4850 1GB in general. (explain)

GeForce GTX Titan Black		336000 MB/sec
Radeon HD 4850 1GB		63552 MB/sec
	Difference: 272448 (429%)

Texel Rate

The GeForce GTX Titan Black will be much (approximately 753%) more effective at AF than the Radeon HD 4850 1GB. (explain)

GeForce GTX Titan Black		213360 Mtexels/sec
Radeon HD 4850 1GB		25000 Mtexels/sec
	Difference: 188360 (753%)

Pixel Rate

If running with high levels of AA is important to you, then the GeForce GTX Titan Black is the winner, by far. (explain)

GeForce GTX Titan Black		42672 Mpixels/sec
Radeon HD 4850 1GB		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 largest amount of data (measured in MB per second) that can be transferred across the external memory interface in one second. The number is worked out by multiplying the bus width by its memory clock speed. If the card has DDR RAM, it 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, HDR and higher screen 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 better this number, the better the card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied per second.

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