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GeForce 9500 GT 1GB GDDR3 vs Radeon R5 M255

Intro

The GeForce 9500 GT 1GB GDDR3 has a GPU clock speed of 550 MHz, and the 1024 MB of GDDR3 memory runs at 800 MHz through a 128-bit bus. It also is comprised of 32 SPUs, 16 TAUs, and 8 ROPs.

Compare those specifications to the Radeon R5 M255, which features a GPU core clock speed of 940 MHz, and 2048 MB of DDR3 memory running at 1000 MHz through a 64-bit bus. It also is comprised of 320 Stream Processors, 20 Texture Address Units, and 8 Raster Operation Units.

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

Theoretically speaking, the GeForce 9500 GT 1GB GDDR3 will be 60% quicker than the Radeon R5 M255 overall, because of its greater data rate. (explain)

GeForce 9500 GT 1GB GDDR3		25600 MB/sec
Radeon R5 M255		16000 MB/sec
	Difference: 9600 (60%)

Texel Rate

The Radeon R5 M255 is a lot (approximately 114%) faster with regards to AF than the GeForce 9500 GT 1GB GDDR3. (explain)

Radeon R5 M255		18800 Mtexels/sec
GeForce 9500 GT 1GB GDDR3		8800 Mtexels/sec
	Difference: 10000 (114%)

Pixel Rate

If running with high levels of AA is important to you, then the Radeon R5 M255 is the winner, by a large margin. (explain)

Radeon R5 M255		7520 Mpixels/sec
GeForce 9500 GT 1GB GDDR3		4400 Mpixels/sec
	Difference: 3120 (71%)

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

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GeForce 9500 GT 1GB GDDR3

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Radeon R5 M255

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Please note that the price comparisons are based on search keywords - sometimes it might show cards with very similar names that are not exactly the same as the one chosen in the comparison. We do try to filter out the wrong results as best we can, though.

Specifications

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Model	GeForce 9500 GT 1GB GDDR3	Radeon R5 M255
Manufacturer	nVidia	AMD
Year	July 2008	June 2014
Code Name	G96b	Jet Pro
Memory	1024 MB	2048 MB
Core Speed	550 MHz	940 MHz
Memory Speed	1600 MHz	2000 MHz
Power (Max TDP)	50 watts	(Unknown) watts
Bandwidth	25600 MB/sec	16000 MB/sec
Texel Rate	8800 Mtexels/sec	18800 Mtexels/sec
Pixel Rate	4400 Mpixels/sec	7520 Mpixels/sec
Unified Shaders	32	320
Texture Mapping Units	16	20
Render Output Units	8	8
Bus Type	GDDR3	DDR3
Bus Width	128-bit	64-bit
Fab Process	55 nm	28 nm
Transistors	314 million	(Unknown) million
Bus	PCIe x16 2.0, PCI	PCIe 3.0 x8
DirectX Version	DirectX 10	DirectX 11.2
OpenGL Version	OpenGL 3.0	OpenGL 4.3

Memory Bandwidth: Memory bandwidth is the maximum amount of information (counted in megabytes per second) that can be transferred past the external memory interface in one second. It's worked out by multiplying the card's bus width by its memory clock speed. If the card has DDR type RAM, the result should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The higher the memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that are applied per second. This figure is calculated by multiplying the total amount of texture units of the card by the core speed of the chip. The higher this number, the better the video card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in a second.

Pixel Rate: Pixel rate is the maximum number of 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 amount of ROPs 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 fill rate is also dependant on many other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the ability to reach the maximum fill rate.

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