GeForce 9800 GT 1GB vs Radeon HD 5770

Intro

Compare those specifications to the Radeon HD 5770, which comes with a clock speed of 850 MHz and a GDDR5 memory speed of 1200 MHz. It also makes use of a 128-bit memory bus, and uses a 40 nm design. It features 800(160x5) SPUs, 40 TAUs, and 16 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce 9800 GT 1GB		105 Watts
Radeon HD 5770		108 Watts
	Difference: 3 Watts (3%)

Memory Bandwidth

Theoretically speaking, the Radeon HD 5770 should perform quite a bit faster than the GeForce 9800 GT 1GB overall. (explain)

Radeon HD 5770		76800 MB/sec
GeForce 9800 GT 1GB		57600 MB/sec
	Difference: 19200 (33%)

Texel Rate

The Radeon HD 5770 is just a bit (more or less 1%) faster with regards to AF than the GeForce 9800 GT 1GB. (explain)

Radeon HD 5770		34000 Mtexels/sec
GeForce 9800 GT 1GB		33600 Mtexels/sec
	Difference: 400 (1%)

Pixel Rate

If running with a high resolution is important to you, then the Radeon HD 5770 is the winner, by a large margin. (explain)

Radeon HD 5770		13600 Mpixels/sec
GeForce 9800 GT 1GB		9600 Mpixels/sec
	Difference: 4000 (42%)

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 information (counted in megabytes per second) that can be transported over the external memory interface in one second. The number is calculated by multiplying the card's bus width by its memory speed. If the card has DDR type RAM, it should be multiplied by 2 again. If DDR5, multiply by 4 instead. The higher the memory bandwidth, the better the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that can be applied per second. This is worked out by multiplying the total amount of texture units of the card 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 in one second.

Pixel Rate: Pixel rate is the most pixels the video card can possibly record to its local memory in one second - measured in millions of pixels per second. The number is calculated by multiplying the amount of ROPs by the the core 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 is also dependant on lots of other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the ability to get to the max fill rate.