GeForce GTX 560 Ti 448 vs Radeon HD 6990

Intro

Compare all that to the Radeon HD 6990, which has GPU clock speed of 830 MHz, and 2048 MB of GDDR5 memory set to run at 1250 MHz through a 256-bit bus. It also is comprised of 1536 SPUs, 96 TAUs, and 32 Raster Operation Units.

Display Graphs

Hide Graphs

Benchmarks

These are real-world performance benchmarks that were submitted by Hardware Compare users. The scores seen here are the average of all benchmarks submitted for each respective test and hardware.

3DMark Fire Strike Graphics Score

Radeon HD 6990		5820 points
GeForce GTX 560 Ti 448		4200 points
	Difference: 1620 (39%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 560 Ti 448		210 Watts
Radeon HD 6990		375 Watts
	Difference: 165 Watts (79%)

Memory Bandwidth

Theoretically speaking, the Radeon HD 6990 should be a lot faster than the GeForce GTX 560 Ti 448 in general. (explain)

Radeon HD 6990		320000 MB/sec
GeForce GTX 560 Ti 448		144000 MB/sec
	Difference: 176000 (122%)

Texel Rate

The Radeon HD 6990 is quite a bit (about 289%) faster with regards to texture filtering than the GeForce GTX 560 Ti 448. (explain)

Radeon HD 6990		159360 Mtexels/sec
GeForce GTX 560 Ti 448		40992 Mtexels/sec
	Difference: 118368 (289%)

Pixel Rate

The Radeon HD 6990 is a lot (about 81%) faster with regards to full screen anti-aliasing than the GeForce GTX 560 Ti 448, and also will be able to handle higher screen resolutions while still performing well. (explain)

Radeon HD 6990		53120 Mpixels/sec
GeForce GTX 560 Ti 448		29280 Mpixels/sec
	Difference: 23840 (81%)

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.

One or more cards in this comparison are multi-core. This means that their bandwidth, texel and pixel rates are theoretically doubled - this does not mean the card will actually perform twice as fast, but only that it should in theory be able to. Actual game benchmarks will give a more accurate idea of what it's capable of.

Price Comparison

Specifications

Memory Bandwidth: Memory bandwidth is the maximum amount of data (in units of megabytes per second) that can be moved across the external memory interface within a second. The number is worked out by multiplying the interface width by its memory speed. If the card has DDR type memory, it should be multiplied by 2 again. If DDR5, multiply by 4 instead. The better the memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that are applied per second. This figure is worked out by multiplying the total texture units of the card by the core speed of the chip. The better the texel rate, the better the card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels in one second.

Pixel Rate: Pixel rate is the most pixels the video card can possibly write to its local memory in a second - measured in millions of pixels per second. The number is calculated by multiplying the number of ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output 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 ability to get to the max fill rate.