Radeon HD 6450 (OEM) vs Radeon R9 295X2

Intro

Compare those specifications to the Radeon R9 295X2, which features a GPU core clock speed of 1018 MHz, and 4096 MB of GDDR5 RAM running at 1250 MHz through a 512-bit bus. It also features 2816 Stream Processors, 176 Texture Address Units, and 64 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 295X2		21205 points
Radeon HD 6450 (OEM)		340 points
	Difference: 20865 (6137%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 6450 (OEM)		31 Watts
Radeon R9 295X2		500 Watts
	Difference: 469 Watts (1513%)

Memory Bandwidth

Theoretically speaking, the Radeon R9 295X2 should perform a lot faster than the Radeon HD 6450 (OEM) overall. (explain)

Radeon R9 295X2		640000 MB/sec
Radeon HD 6450 (OEM)		12800 MB/sec
	Difference: 627200 (4900%)

Texel Rate

The Radeon R9 295X2 is much (about 7067%) more effective at anisotropic filtering than the Radeon HD 6450 (OEM). (explain)

Radeon R9 295X2		358336 Mtexels/sec
Radeon HD 6450 (OEM)		5000 Mtexels/sec
	Difference: 353336 (7067%)

Pixel Rate

If using lots of anti-aliasing is important to you, then the Radeon R9 295X2 is the winner, by far. (explain)

Radeon R9 295X2		130304 Mpixels/sec
Radeon HD 6450 (OEM)		2500 Mpixels/sec
	Difference: 127804 (5112%)

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.

One or more cards in this comparison are multi-core. This means that their bandwidth, texel and pixel rates are theoretically doubled - this does not mean the card will actually perform twice as fast, but only that it should in theory be able to. Actual game benchmarks will give a more accurate idea of what it's capable of.

Price Comparison

Specifications

Memory Bandwidth: Bandwidth is the maximum amount of data (counted in MB per second) that can be moved across the external memory interface in a second. It is worked out by multiplying the card's bus width by its memory speed. If the card has DDR RAM, it must be multiplied by 2 again. If DDR5, multiply by 4 instead. The better the memory bandwidth, the better the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that can be processed per second. This is calculated by multiplying the total amount of texture units 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 one second.

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics chip could possibly write to its local memory per second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of Render Output Units by the the core clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill rate is also dependant on quite a few other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to reach the maximum fill rate.