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GeForce 9500 GT DDR2 vs GeForce GT 220 GDDR3

Intro

The GeForce 9500 GT DDR2 uses a 65 nm design. nVidia has clocked the core frequency at 550 MHz. The DDR2 memory runs at a frequency of 500 MHz on this particular model. It features 32 SPUs as well as 16 TAUs and 8 Rasterization Operator Units.

Compare those specifications to the GeForce GT 220 GDDR3, which features a clock frequency of 625 MHz and a GDDR3 memory frequency of 1012 MHz. It also features a 128-bit memory bus, and uses a 40 nm design. It is comprised of 48 SPUs, 16 Texture Address Units, and 8 ROPs.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce 9500 GT DDR2 50 Watts
GeForce GT 220 GDDR3 58 Watts
Difference: 8 Watts (16%)

Memory Bandwidth

The GeForce GT 220 GDDR3, in theory, should be much faster than the GeForce 9500 GT DDR2 in general. (explain)

GeForce GT 220 GDDR3 32384 MB/sec
GeForce 9500 GT DDR2 16000 MB/sec
Difference: 16384 (102%)

Texel Rate

The GeForce GT 220 GDDR3 should be a small bit (about 14%) more effective at anisotropic filtering than the GeForce 9500 GT DDR2. (explain)

GeForce GT 220 GDDR3 10000 Mtexels/sec
GeForce 9500 GT DDR2 8800 Mtexels/sec
Difference: 1200 (14%)

Pixel Rate

The GeForce GT 220 GDDR3 should be a bit (approximately 14%) faster with regards to full screen anti-aliasing than the GeForce 9500 GT DDR2, and also able to handle higher screen resolutions without slowing down too much. (explain)

GeForce GT 220 GDDR3 5000 Mpixels/sec
GeForce 9500 GT DDR2 4400 Mpixels/sec
Difference: 600 (14%)

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 DDR2

Amazon.com

GeForce GT 220 GDDR3

Amazon.com

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 DDR2 GeForce GT 220 GDDR3
Manufacturer nVidia nVidia
Year July 2008 October 2009
Code Name G96a GT216
Memory 256 MB 512 MB
Core Speed 550 MHz 625 MHz
Memory Speed 1000 MHz 2024 MHz
Power (Max TDP) 50 watts 58 watts
Bandwidth 16000 MB/sec 32384 MB/sec
Texel Rate 8800 Mtexels/sec 10000 Mtexels/sec
Pixel Rate 4400 Mpixels/sec 5000 Mpixels/sec
Unified Shaders 32 48
Texture Mapping Units 16 16
Render Output Units 8 8
Bus Type DDR2 GDDR3
Bus Width 128-bit 128-bit
Fab Process 65 nm 40 nm
Transistors 314 million 486 million
Bus PCIe x16 2.0, PCI PCIe 2.0
DirectX Version DirectX 10 DirectX 10.1
OpenGL Version OpenGL 3.0 OpenGL 3.2

Memory Bandwidth: Bandwidth is the largest amount of data (measured in megabytes per second) that can be moved past the external memory interface within a second. It is worked out by multiplying the bus width by the speed of its memory. In the case of DDR RAM, it should be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The higher the bandwidth is, 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 texture map elements (texels) that are applied in one second. This is calculated by multiplying the total texture units of the card by the core clock speed of the chip. The better the texel rate, the better the video card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed per second.

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics chip could possibly record to its local memory in a second - measured in millions of pixels per second. The number is calculated by multiplying the amount of Raster Operations Pipelines by the clock speed of the card. 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 many other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the ability to get to the max fill rate.

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