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GeForce 9500 GT 512MB GDDR3 vs Radeon HD 3650 256MB

Intro

The GeForce 9500 GT 512MB GDDR3 uses a 55 nm design. nVidia has clocked the core frequency at 550 MHz. The GDDR3 RAM works at a frequency of 800 MHz on this specific card. It features 32 SPUs along with 16 Texture Address Units and 8 ROPs.

Compare that to the Radeon HD 3650 256MB, which features a core clock speed of 725 MHz and a DDR2 memory speed of 800 MHz. It also features a 128-bit memory bus, and makes use of a 55 nm design. It is made up of 120(24x5) SPUs, 8 TAUs, and 4 ROPs.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce 9500 GT 512MB GDDR3 50 Watts
Radeon HD 3650 256MB 78 Watts
Difference: 28 Watts (56%)

Memory Bandwidth

Both cards have exactly the same memory bandwidth, so in theory they should have the same performance. (explain)

Texel Rate

The GeForce 9500 GT 512MB GDDR3 should be much (approximately 52%) faster with regards to texture filtering than the Radeon HD 3650 256MB. (explain)

GeForce 9500 GT 512MB GDDR3 8800 Mtexels/sec
Radeon HD 3650 256MB 5800 Mtexels/sec
Difference: 3000 (52%)

Pixel Rate

The GeForce 9500 GT 512MB GDDR3 should be much (more or less 52%) better at full screen anti-aliasing than the Radeon HD 3650 256MB, and also will be capable of handling higher screen resolutions without slowing down too much. (explain)

GeForce 9500 GT 512MB GDDR3 4400 Mpixels/sec
Radeon HD 3650 256MB 2900 Mpixels/sec
Difference: 1500 (52%)

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 3650 256MB

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 3650 256MB
Manufacturer nVidia AMD
Year July 2008 2008
Code Name G96b RV635 PRO
Memory 512 MB 256 MB
Core Speed 550 MHz 725 MHz
Memory Speed 1600 MHz 1600 MHz
Power (Max TDP) 50 watts 78 watts
Bandwidth 25600 MB/sec 25600 MB/sec
Texel Rate 8800 Mtexels/sec 5800 Mtexels/sec
Pixel Rate 4400 Mpixels/sec 2900 Mpixels/sec
Unified Shaders 32 120(24x5)
Texture Mapping Units 16 8
Render Output Units 8 4
Bus Type GDDR3 DDR2
Bus Width 128-bit 128-bit
Fab Process 55 nm 55 nm
Transistors 314 million (Unknown) 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: Memory bandwidth is the max amount of data (measured in megabytes per second) that can be transferred across the external memory interface in a second. The number is worked out by multiplying the bus width by its memory speed. If the card has DDR type RAM, it must be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The better the card's 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 amount of texture map elements (texels) that are processed in one second. This figure is worked out by multiplying the total number of texture units of the card by the core clock speed of the chip. The higher the texel rate, the better the graphics card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in one second.

Pixel Rate: Pixel rate is the most pixels the video card could possibly record to its local memory in one second - measured in millions of pixels per second. The number is calculated by multiplying the number of Render Output Units by the the core speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel output rate also depends on many other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the potential to reach the maximum fill rate.

Display Prices

Hide Prices

GeForce 9500 GT 512MB GDDR3

Amazon.com

Check prices at:

Radeon HD 3650 256MB

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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