GeForce GTX 970 vs Radeon HD 5830

Intro

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

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 970		145 Watts
Radeon HD 5830		175 Watts
	Difference: 30 Watts (21%)

Memory Bandwidth

Theoretically speaking, the GeForce GTX 970 should be much faster than the Radeon HD 5830 overall. (explain)

GeForce GTX 970		224000 MB/sec
Radeon HD 5830		128000 MB/sec
	Difference: 96000 (75%)

Texel Rate

The GeForce GTX 970 should be much (about 144%) faster with regards to texture filtering than the Radeon HD 5830. (explain)

GeForce GTX 970		109200 Mtexels/sec
Radeon HD 5830		44800 Mtexels/sec
	Difference: 64400 (144%)

Pixel Rate

If using high levels of AA is important to you, then the GeForce GTX 970 is the winner, and very much so. (explain)

GeForce GTX 970		67200 Mpixels/sec
Radeon HD 5830		12800 Mpixels/sec
	Difference: 54400 (425%)

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 maximum amount of data (measured in megabytes per second) that can be transported past the external memory interface in one second. It is calculated by multiplying the card's interface width by the speed of its memory. If it uses DDR memory, it should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The better the bandwidth is, the better the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that can be processed in one second. This is calculated by multiplying the total amount of texture units of the card by the core clock speed of the chip. The better the texel rate, the better the 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 maximum number of pixels the video card could possibly record to its local memory in one second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate is also dependant on lots of 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.