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GeForce 9500 GT DDR2 vs Radeon HD 4650 512MB

Intro

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

Compare all that to the Radeon HD 4650 512MB, which has core speeds of 600 MHz on the GPU, and 500 MHz on the 512 MB of DDR2 memory. It features 320(64x5) SPUs along with 32 TAUs and 8 Rasterization Operator Units.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce 9500 GT DDR2 50 Watts
Radeon HD 4650 512MB 55 Watts
Difference: 5 Watts (10%)

Memory Bandwidth

Both cards have the exact same bandwidth, so theoretically they should have the same performance. (explain)

Texel Rate

The Radeon HD 4650 512MB will be a lot (about 118%) better at AF than the GeForce 9500 GT DDR2. (explain)

Radeon HD 4650 512MB 19200 Mtexels/sec
GeForce 9500 GT DDR2 8800 Mtexels/sec
Difference: 10400 (118%)

Pixel Rate

The Radeon HD 4650 512MB should be a little bit (about 9%) more effective at FSAA than the GeForce 9500 GT DDR2, and will be able to handle higher resolutions without slowing down too much. (explain)

Radeon HD 4650 512MB 4800 Mpixels/sec
GeForce 9500 GT DDR2 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 DDR2

Amazon.com

Check prices at:

Radeon HD 4650 512MB

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 DDR2 Radeon HD 4650 512MB
Manufacturer nVidia AMD
Year July 2008 Sep 10, 2008
Code Name G96a RV730 PRO
Memory 256 MB 512 MB
Core Speed 550 MHz 600 MHz
Memory Speed 1000 MHz 1000 MHz
Power (Max TDP) 50 watts 55 watts
Bandwidth 16000 MB/sec 16000 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 DDR2 DDR2
Bus Width 128-bit 128-bit
Fab Process 65 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: Memory bandwidth is the maximum amount of data (counted in MB per second) that can be transferred across the external memory interface within a second. It is worked out by multiplying the card's bus width by its memory speed. If the card has DDR RAM, it must be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The higher the bandwidth is, 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 can be applied per second. This is calculated by multiplying the total amount 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 that the graphics card 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 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 of the card - the lower the bandwidth is, the lower the ability to get to the max fill rate.

Display Prices

Hide Prices

GeForce 9500 GT DDR2

Amazon.com

Check prices at:

Radeon HD 4650 512MB

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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