GeForce 9800 GTX+ vs Radeon HD 5830

Intro

Compare all of that to the Radeon HD 5830, which uses 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 model. It features 1120(224x5) SPUs along with 56 Texture Address Units and 16 Rasterization Operator Units.

Display Graphs

Hide Graphs

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

Theoretically speaking, the Radeon HD 5830 will be 82% quicker than the GeForce 9800 GTX+ overall, due to 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 a bit (about 5%) faster with regards to 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 lots of anti-aliasing 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: Memory bandwidth is the maximum amount of data (counted in MB per second) that can be moved over the external memory interface in a second. It's worked out by multiplying the interface width by its memory speed. If the card has DDR type RAM, it must be multiplied by 2 once 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 AA, HDR and high resolutions.

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

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics card could possibly record to the local memory in a second - measured in millions of pixels per second. The number is calculated by multiplying the amount of Raster Operations Pipelines by the the core speed of the card. 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, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to get to the max fill rate.