GeForce GTX 275 vs Radeon HD 5830

Intro

Compare those specifications to the Radeon HD 5830, which makes use of a 40 nm design. AMD has clocked the core frequency at 800 MHz. The GDDR5 RAM is set to run at a speed of 1000 MHz on this specific model. It features 1120(224x5) SPUs along with 56 TAUs and 16 Rasterization Operator Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 5830		175 Watts
GeForce GTX 275		219 Watts
	Difference: 44 Watts (25%)

Memory Bandwidth

As far as performance goes, the Radeon HD 5830 should theoretically be a small bit superior to the GeForce GTX 275 in general. (explain)

Radeon HD 5830		128000 MB/sec
GeForce GTX 275		127008 MB/sec
	Difference: 992 (1%)

Texel Rate

The GeForce GTX 275 should be a small bit (more or less 13%) faster with regards to texture filtering than the Radeon HD 5830. (explain)

GeForce GTX 275		50640 Mtexels/sec
Radeon HD 5830		44800 Mtexels/sec
	Difference: 5840 (13%)

Pixel Rate

The GeForce GTX 275 should be a lot (more or less 38%) more effective at FSAA than the Radeon HD 5830, and will be capable of handling higher resolutions more effectively. (explain)

GeForce GTX 275		17724 Mpixels/sec
Radeon HD 5830		12800 Mpixels/sec
	Difference: 4924 (38%)

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 max amount of information (measured in megabytes per second) that can be transferred over the external memory interface within a second. The number is worked out by multiplying the bus width by its memory clock speed. If the card has DDR type memory, it should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The better the card's memory bandwidth, 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 amount of texture map elements (texels) that are applied in one second. This number is worked out by multiplying the total texture units by the core clock speed of the chip. The better this number, the better the graphics card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed per second.

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics card can possibly write to the local memory in one second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of Raster Operations Pipelines by the the card's clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill rate also depends on many other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the potential to get to the maximum fill rate.