Radeon HD 6450 (OEM) vs Radeon R9 270X

Intro

Compare those specifications to the Radeon R9 270X, which features a core clock speed of 1000 MHz and a GDDR5 memory speed of 1400 MHz. It also features a 256-bit memory bus, and uses a 28 nm design. It is comprised of 1280 SPUs, 80 TAUs, and 32 ROPs.

Display Graphs

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Benchmarks

These are real-world performance benchmarks that were submitted by Hardware Compare users. The scores seen here are the average of all benchmarks submitted for each respective test and hardware.

3DMark Fire Strike Graphics Score

Radeon R9 270X		6590 points
Radeon HD 6450 (OEM)		340 points
	Difference: 6250 (1838%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 6450 (OEM)		31 Watts
Radeon R9 270X		180 Watts
	Difference: 149 Watts (481%)

Memory Bandwidth

Theoretically speaking, the Radeon R9 270X should be a lot faster than the Radeon HD 6450 (OEM) overall. (explain)

Radeon R9 270X		179200 MB/sec
Radeon HD 6450 (OEM)		12800 MB/sec
	Difference: 166400 (1300%)

Texel Rate

The Radeon R9 270X will be quite a bit (more or less 1500%) faster with regards to AF than the Radeon HD 6450 (OEM). (explain)

Radeon R9 270X		80000 Mtexels/sec
Radeon HD 6450 (OEM)		5000 Mtexels/sec
	Difference: 75000 (1500%)

Pixel Rate

The Radeon R9 270X will be much (approximately 1180%) more effective at AA than the Radeon HD 6450 (OEM), and also should be able to handle higher screen resolutions better. (explain)

Radeon R9 270X		32000 Mpixels/sec
Radeon HD 6450 (OEM)		2500 Mpixels/sec
	Difference: 29500 (1180%)

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 max amount of information (measured in megabytes per second) that can be transported past the external memory interface in one second. It is worked out by multiplying the bus width by its memory speed. In the case of DDR memory, the result should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The higher the memory bandwidth, the faster the card will be in general. It especially helps with AA, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that can be processed per second. This number is worked out by multiplying the total number of texture units of the card by the core 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 that the graphics chip could possibly record to the local memory in one second - measured in millions of pixels per second. The figure is calculated by multiplying the number of ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output rate is also dependant on lots of other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the potential to reach the max fill rate.