GeForce 8500 GT vs Radeon HD 6450 (OEM) 1GB

Intro

Compare all of that to the Radeon HD 6450 (OEM) 1GB, which has a core clock frequency of 750 MHz and a GDDR5 memory speed of 900 MHz. It also makes use of a 64-bit memory bus, and makes use of a 40 nm design. It is made up of 160 SPUs, 8 Texture Address Units, and 4 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 6450 (OEM) 1GB		31 Watts
GeForce 8500 GT		45 Watts
	Difference: 14 Watts (45%)

Memory Bandwidth

The Radeon HD 6450 (OEM) 1GB should theoretically perform much faster than the GeForce 8500 GT in general. (explain)

Radeon HD 6450 (OEM) 1GB		28800 MB/sec
GeForce 8500 GT		12800 MB/sec
	Difference: 16000 (125%)

Texel Rate

The Radeon HD 6450 (OEM) 1GB is much (more or less 67%) faster with regards to AF than the GeForce 8500 GT. (explain)

Radeon HD 6450 (OEM) 1GB		6000 Mtexels/sec
GeForce 8500 GT		3600 Mtexels/sec
	Difference: 2400 (67%)

Pixel Rate

The Radeon HD 6450 (OEM) 1GB is quite a bit (more or less 67%) better at full screen anti-aliasing than the GeForce 8500 GT, and also capable of handling higher screen resolutions while still performing well. (explain)

Radeon HD 6450 (OEM) 1GB		3000 Mpixels/sec
GeForce 8500 GT		1800 Mpixels/sec
	Difference: 1200 (67%)

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 largest amount of data (measured in MB per second) that can be transferred over the external memory interface in a second. It's calculated by multiplying the card's interface width by its memory clock speed. In the case of DDR type memory, the result should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The better the card's memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, HDR and higher screen 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 amount of texture units of the card by the core clock speed of the chip. The higher the texel rate, the better the card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in a second.

Pixel Rate: Pixel rate is the most pixels that the graphics chip could possibly write to its local memory in a second - measured in millions of pixels per second. The number is worked out by multiplying the number of Render Output Units by the the core speed of the card. 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 output rate also depends on many 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.