GeForce GTX 660 Ti vs Radeon HD 5830

Intro

Compare all of that to the Radeon HD 5830, which has a core clock speed of 800 MHz and a GDDR5 memory speed of 1000 MHz. It also uses a 256-bit memory bus, and uses a 40 nm design. It is comprised of 1120(224x5) SPUs, 56 Texture Address Units, and 16 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 660 Ti		150 Watts
Radeon HD 5830		175 Watts
	Difference: 25 Watts (17%)

Memory Bandwidth

Theoretically speaking, the GeForce GTX 660 Ti should be 13% quicker than the Radeon HD 5830 overall, due to its greater data rate. (explain)

GeForce GTX 660 Ti		144000 MB/sec
Radeon HD 5830		128000 MB/sec
	Difference: 16000 (13%)

Texel Rate

The GeForce GTX 660 Ti will be much (approximately 129%) faster with regards to texture filtering than the Radeon HD 5830. (explain)

GeForce GTX 660 Ti		102480 Mtexels/sec
Radeon HD 5830		44800 Mtexels/sec
	Difference: 57680 (129%)

Pixel Rate

If running with a high resolution is important to you, then the GeForce GTX 660 Ti is superior to the Radeon HD 5830, and very much so. (explain)

GeForce GTX 660 Ti		21960 Mpixels/sec
Radeon HD 5830		12800 Mpixels/sec
	Difference: 9160 (72%)

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 (in units of megabytes per second) that can be transferred over the external memory interface in a second. It is worked out by multiplying the bus width by the speed of its memory. If the card has DDR memory, it should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The higher the bandwidth is, the faster the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that are processed in one second. This figure is worked out by multiplying the total texture units of the card by the core speed of the chip. The better this number, the better the video 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 card could possibly record to the local memory in one second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the amount of Render Output Units by the clock speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel rate also depends on quite a few other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to reach the max fill rate.