GeForce 8800 GTS (G80) 640MB vs Radeon HD 6450 (OEM) 1GB

Intro

Compare all of that to the Radeon HD 6450 (OEM) 1GB, which comes with GPU core speed of 750 MHz, and 1024 MB of GDDR5 memory set to run at 900 MHz through a 64-bit bus. It also features 160 Stream Processors, 8 TAUs, and 4 Raster Operation Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 6450 (OEM) 1GB		31 Watts
GeForce 8800 GTS (G80) 640MB		143 Watts
	Difference: 112 Watts (361%)

Memory Bandwidth

Theoretically speaking, the GeForce 8800 GTS (G80) 640MB is 120% quicker than the Radeon HD 6450 (OEM) 1GB in general, because of its higher bandwidth. (explain)

GeForce 8800 GTS (G80) 640MB		63360 MB/sec
Radeon HD 6450 (OEM) 1GB		28800 MB/sec
	Difference: 34560 (120%)

Texel Rate

The GeForce 8800 GTS (G80) 640MB will be a lot (more or less 310%) faster with regards to texture filtering than the Radeon HD 6450 (OEM) 1GB. (explain)

GeForce 8800 GTS (G80) 640MB		24624 Mtexels/sec
Radeon HD 6450 (OEM) 1GB		6000 Mtexels/sec
	Difference: 18624 (310%)

Pixel Rate

The GeForce 8800 GTS (G80) 640MB will be a lot (about 242%) faster with regards to full screen anti-aliasing than the Radeon HD 6450 (OEM) 1GB, and also should be capable of handling higher resolutions more effectively. (explain)

GeForce 8800 GTS (G80) 640MB		10260 Mpixels/sec
Radeon HD 6450 (OEM) 1GB		3000 Mpixels/sec
	Difference: 7260 (242%)

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 (in units of MB per second) that can be moved across the external memory interface in a second. It's worked out by multiplying the card's bus width by its memory clock speed. If the card has DDR RAM, the result should be multiplied by 2 once again. If it uses 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 higher screen resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that are processed per second. This number is worked out by multiplying the total amount of texture units by the core clock speed of the chip. The better the texel rate, the better the graphics card will be at handling 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 card could possibly write to its local memory in a second - measured in millions of pixels per second. The figure is worked out by multiplying the number of colour ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate is also dependant on many other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to get to the max fill rate.