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GeForce 9500 GT DDR2 vs GeForce GT 220 GDDR3

Intro

The GeForce 9500 GT DDR2 has a GPU core speed of 550 MHz, and the 256 MB of DDR2 RAM is set to run at 500 MHz through a 128-bit bus. It also is made up of 32 SPUs, 16 Texture Address Units, and 8 ROPs.

Compare that to the GeForce GT 220 GDDR3, which has GPU clock speed of 625 MHz, and 512 MB of GDDR3 memory set to run at 1012 MHz through a 128-bit bus. It also is comprised of 48 Stream Processors, 16 TAUs, and 8 Raster Operation Units.

(No game benchmarks for this combination yet.)

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

Theoretically speaking, the GeForce GT 220 GDDR3 should be a lot 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 is a bit (approximately 14%) more effective at AF 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 is just a bit (approximately 14%) better at anti-aliasing than the GeForce 9500 GT DDR2, and will be able to handle higher screen resolutions while still performing well. (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

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

Model GeForce 9500 GT DDR2 GeForce GT 220 GDDR3
Manufacturer nVidia nVidia
Year July 2008 October 2009
Code Name G96a GT216
Fab Process 65 nm 40 nm
Bus PCIe x16 2.0, PCI PCIe 2.0
Memory 256 MB 512 MB
Core Speed 550 MHz 625 MHz
Shader Speed 1400 MHz 1360 MHz
Memory Speed 500 MHz (1000 MHz effective) 1012 MHz (2024 MHz effective)
Unified Shaders 32 48
Texture Mapping Units 16 16
Render Output Units 8 8
Bus Type DDR2 GDDR3
Bus Width 128-bit 128-bit
DirectX Version DirectX 10 DirectX 10.1
OpenGL Version OpenGL 3.0 OpenGL 3.2
Power (Max TDP) 50 watts 58 watts
Shader Model 4.0 4.1
Bandwidth 16000 MB/sec 32384 MB/sec
Texel Rate 8800 Mtexels/sec 10000 Mtexels/sec
Pixel Rate 4400 Mpixels/sec 5000 Mpixels/sec

Memory Bandwidth: Memory bandwidth is the largest amount of data (counted in MB per second) that can be transported over the external memory interface in a second. The number is worked out by multiplying the interface width by its memory speed. If the card has DDR type memory, it should be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The higher the memory bandwidth, 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 can be processed per second. This is worked out by multiplying the total number of texture units by the core clock speed of the chip. The higher the texel rate, the better the video card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in a second.

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics chip could possibly write to the local memory in a second - measured in millions of pixels per second. The number is calculated by multiplying the number of ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel output rate also depends on quite a few other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to get to the maximum fill rate.

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