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GeForce 9500 GT 512MB GDDR3 vs Radeon HD 4650 1GB

Intro

The GeForce 9500 GT 512MB GDDR3 comes with a GPU core speed of 550 MHz, and the 512 MB of GDDR3 RAM is set to run at 800 MHz through a 128-bit bus. It also is made up of 32 Stream Processors, 16 Texture Address Units, and 8 Raster Operation Units.

Compare all of that to the Radeon HD 4650 1GB, which comes with a GPU core clock speed of 600 MHz, and 1024 MB of GDDR3 RAM running at 700 MHz through a 128-bit bus. It also is comprised of 320(64x5) Stream Processors, 32 Texture Address Units, and 8 Raster Operation Units.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce 9500 GT 512MB GDDR3 50 Watts
Radeon HD 4650 1GB 55 Watts
Difference: 5 Watts (10%)

Memory Bandwidth

Theoretically speaking, the GeForce 9500 GT 512MB GDDR3 is 14% faster than the Radeon HD 4650 1GB overall, due to its greater bandwidth. (explain)

GeForce 9500 GT 512MB GDDR3 25600 MB/sec
Radeon HD 4650 1GB 22400 MB/sec
Difference: 3200 (14%)

Texel Rate

The Radeon HD 4650 1GB is quite a bit (about 118%) faster with regards to anisotropic filtering than the GeForce 9500 GT 512MB GDDR3. (explain)

Radeon HD 4650 1GB 19200 Mtexels/sec
GeForce 9500 GT 512MB GDDR3 8800 Mtexels/sec
Difference: 10400 (118%)

Pixel Rate

The Radeon HD 4650 1GB will be a little bit (more or less 9%) faster with regards to AA than the GeForce 9500 GT 512MB GDDR3, and also will be able to handle higher screen resolutions better. (explain)

Radeon HD 4650 1GB 4800 Mpixels/sec
GeForce 9500 GT 512MB GDDR3 4400 Mpixels/sec
Difference: 400 (9%)

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 512MB GDDR3

Amazon.com

Check prices at:

Radeon HD 4650 1GB

Amazon.com

Check prices at:

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 512MB GDDR3 Radeon HD 4650 1GB
Manufacturer nVidia AMD
Year July 2008 Sep 10, 2008
Code Name G96b RV730 PRO
Memory 512 MB 1024 MB
Core Speed 550 MHz 600 MHz
Memory Speed 1600 MHz 1400 MHz
Power (Max TDP) 50 watts 55 watts
Bandwidth 25600 MB/sec 22400 MB/sec
Texel Rate 8800 Mtexels/sec 19200 Mtexels/sec
Pixel Rate 4400 Mpixels/sec 4800 Mpixels/sec
Unified Shaders 32 320(64x5)
Texture Mapping Units 16 32
Render Output Units 8 8
Bus Type GDDR3 GDDR3
Bus Width 128-bit 128-bit
Fab Process 55 nm 55 nm
Transistors 314 million 514 million
Bus PCIe x16 2.0, PCI PCIe 2.0 x16, AGP 8x
DirectX Version DirectX 10 DirectX 10.1
OpenGL Version OpenGL 3.0 OpenGL 3.0

Memory Bandwidth: Bandwidth is the max amount of information (in units of megabytes per second) that can be transferred over the external memory interface in a second. The number is calculated by multiplying the card's bus width by the speed of its memory. If the card has DDR type RAM, the result should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The better the memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that are processed per second. This is worked out by multiplying the total amount of texture units 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 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 one second - measured in millions of pixels per second. Pixel rate is worked out 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 filling the screen with pixels (the image). The actual pixel fill 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 potential to get to the max fill rate.

Display Prices

Hide Prices

GeForce 9500 GT 512MB GDDR3

Amazon.com

Check prices at:

Radeon HD 4650 1GB

Amazon.com

Check prices at:

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.

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