GeForce 9800 GTX+ vs Radeon HD 6450 (OEM)

Intro

Compare that to the Radeon HD 6450 (OEM), which comes with GPU clock speed of 625 MHz, and 512 MB of GDDR3 memory set to run at 800 MHz through a 64-bit bus. It also is comprised of 160 SPUs, 8 TAUs, and 4 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 6450 (OEM)		31 Watts
GeForce 9800 GTX+		145 Watts
	Difference: 114 Watts (368%)

Memory Bandwidth

The GeForce 9800 GTX+ should theoretically be much faster than the Radeon HD 6450 (OEM) overall. (explain)

GeForce 9800 GTX+		70400 MB/sec
Radeon HD 6450 (OEM)		12800 MB/sec
	Difference: 57600 (450%)

Texel Rate

The GeForce 9800 GTX+ should be a lot (more or less 845%) faster with regards to anisotropic filtering than the Radeon HD 6450 (OEM). (explain)

GeForce 9800 GTX+		47232 Mtexels/sec
Radeon HD 6450 (OEM)		5000 Mtexels/sec
	Difference: 42232 (845%)

Pixel Rate

The GeForce 9800 GTX+ will be quite a bit (approximately 372%) faster with regards to anti-aliasing than the Radeon HD 6450 (OEM), and also will be able to handle higher resolutions more effectively. (explain)

GeForce 9800 GTX+		11808 Mpixels/sec
Radeon HD 6450 (OEM)		2500 Mpixels/sec
	Difference: 9308 (372%)

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 information (in units of MB per second) that can be moved over the external memory interface in one second. It's calculated by multiplying the card's bus width by its memory speed. In the case of DDR memory, the result should be multiplied by 2 again. If DDR5, multiply by 4 instead. The better the memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that are applied in one 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 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 the video card could possibly record to the local memory in one second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the number of Raster Operations Pipelines by the the card's clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel rate also depends on many other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the ability to get to the max fill rate.