GeForce 9800 GTX+ vs Radeon HD 5830

Intro

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

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce 9800 GTX+		145 Watts
Radeon HD 5830		175 Watts
	Difference: 30 Watts (21%)

Memory Bandwidth

In theory, the Radeon HD 5830 is 82% quicker than the GeForce 9800 GTX+ in general, because of its higher data rate. (explain)

Radeon HD 5830		128000 MB/sec
GeForce 9800 GTX+		70400 MB/sec
	Difference: 57600 (82%)

Texel Rate

The GeForce 9800 GTX+ is just a bit (approximately 5%) more effective at texture filtering than the Radeon HD 5830. (explain)

GeForce 9800 GTX+		47232 Mtexels/sec
Radeon HD 5830		44800 Mtexels/sec
	Difference: 2432 (5%)

Pixel Rate

If using high levels of AA is important to you, then the Radeon HD 5830 is superior to the GeForce 9800 GTX+, not by a very large margin though. (explain)

Radeon HD 5830		12800 Mpixels/sec
GeForce 9800 GTX+		11808 Mpixels/sec
	Difference: 992 (8%)

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: Bandwidth is the maximum amount of data (measured in MB per second) that can be transferred across the external memory interface in one second. It is calculated by multiplying the card's interface width by its memory speed. If it uses DDR type memory, it should be multiplied by 2 again. If it uses 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 high resolutions.

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

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics chip could possibly write to the local memory in one second - measured in millions of pixels per second. The figure is calculated by multiplying the number of colour ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel rate also depends on quite a few other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to get to the maximum fill rate.