GeForce GT 230 vs Radeon HD 6450 (OEM) 1GB

Intro

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

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 6450 (OEM) 1GB		31 Watts
GeForce GT 230		65 Watts
	Difference: 34 Watts (110%)

Memory Bandwidth

Performance-wise, the GeForce GT 230 should in theory be quite a bit superior to the Radeon HD 6450 (OEM) 1GB overall. (explain)

GeForce GT 230		38400 MB/sec
Radeon HD 6450 (OEM) 1GB		28800 MB/sec
	Difference: 9600 (33%)

Texel Rate

The GeForce GT 230 will be quite a bit (about 47%) faster with regards to texture filtering than the Radeon HD 6450 (OEM) 1GB. (explain)

GeForce GT 230		8800 Mtexels/sec
Radeon HD 6450 (OEM) 1GB		6000 Mtexels/sec
	Difference: 2800 (47%)

Pixel Rate

The GeForce GT 230 should be much (about 47%) more effective at AA than the Radeon HD 6450 (OEM) 1GB, and also will be capable of handling higher resolutions better. (explain)

GeForce GT 230		4400 Mpixels/sec
Radeon HD 6450 (OEM) 1GB		3000 Mpixels/sec
	Difference: 1400 (47%)

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 data (in units of megabytes per second) that can be moved over the external memory interface in one second. It's calculated by multiplying the bus width by the speed of its memory. If the card has DDR type RAM, the result should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The better the bandwidth is, the faster the card will be in general. It especially helps with AA, 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 number is worked out by multiplying the total number of texture units of the card 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 in one second.

Pixel Rate: Pixel rate is the maximum number of pixels the graphics card could possibly write to the local memory in a second - measured in millions of pixels per second. The number is worked out by multiplying the amount of Render Output Units by the the core clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill 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 maximum fill rate.