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GeForce GT 310 vs Radeon HD 4650 512MB

Intro

The GeForce GT 310 features a core clock frequency of 589 MHz and a DDR2 memory speed of 1000 MHz. It also makes use of a 64-bit bus, and makes use of a 40 nm design. It is comprised of 16 SPUs, 8 Texture Address Units, and 4 Raster Operation Units.

Compare that to the Radeon HD 4650 512MB, which comes with a core clock frequency of 600 MHz and a DDR2 memory speed of 500 MHz. It also features a 128-bit memory bus, and uses a 55 nm design. It is comprised of 320(64x5) SPUs, 32 Texture Address Units, and 8 ROPs.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 310 31 Watts
Radeon HD 4650 512MB 55 Watts
Difference: 24 Watts (77%)

Memory Bandwidth

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

Texel Rate

The Radeon HD 4650 512MB is much (more or less 307%) more effective at anisotropic filtering than the GeForce GT 310. (explain)

Radeon HD 4650 512MB 19200 Mtexels/sec
GeForce GT 310 4712 Mtexels/sec
Difference: 14488 (307%)

Pixel Rate

If using high levels of AA is important to you, then the Radeon HD 4650 512MB is superior to the GeForce GT 310, by far. (explain)

Radeon HD 4650 512MB 4800 Mpixels/sec
GeForce GT 310 2356 Mpixels/sec
Difference: 2444 (104%)

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 GT 310

Amazon.com

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Radeon HD 4650 512MB

Amazon.com

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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 GT 310 Radeon HD 4650 512MB
Manufacturer nVidia AMD
Year November 2009 Sep 10, 2008
Code Name GT218 RV730 PRO
Memory 512 MB 512 MB
Core Speed 589 MHz 600 MHz
Memory Speed 2000 MHz 1000 MHz
Power (Max TDP) 31 watts 55 watts
Bandwidth 16000 MB/sec 16000 MB/sec
Texel Rate 4712 Mtexels/sec 19200 Mtexels/sec
Pixel Rate 2356 Mpixels/sec 4800 Mpixels/sec
Unified Shaders 16 320(64x5)
Texture Mapping Units 8 32
Render Output Units 4 8
Bus Type DDR2 DDR2
Bus Width 64-bit 128-bit
Fab Process 40 nm 55 nm
Transistors 260 million 514 million
Bus PCIe 2.0 PCIe 2.0 x16, AGP 8x
DirectX Version DirectX 10.1 DirectX 10.1
OpenGL Version OpenGL 3.1 OpenGL 3.0

Memory Bandwidth: Bandwidth is the maximum amount of information (in units of MB per second) that can be transported across the external memory interface within a second. The number is calculated by multiplying the bus width by the speed of its memory. In the case of DDR memory, the result should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. 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 in one second. This number is calculated by multiplying the total texture units by the core clock speed of the chip. The higher the texel rate, the better the card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in one second.

Pixel Rate: Pixel rate is the most pixels that the graphics card could possibly record to its local memory per second - measured in millions of pixels per second. The figure is worked out by multiplying the amount of Raster Operations Pipelines by the the card's clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill rate is also dependant on quite a few other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to reach the maximum fill rate.

Display Prices

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GeForce GT 310

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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