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GeForce GT 320 vs Radeon HD 6450 (OEM)

Intro

The GeForce GT 320 has core clock speeds of 540 MHz on the GPU, and 790 MHz on the 1024 MB of GDDR3 RAM. It features 72 SPUs as well as 24 Texture Address Units and 8 Rasterization Operator Units.

Compare those specs to the Radeon HD 6450 (OEM), which features a clock speed of 625 MHz and a GDDR3 memory frequency of 800 MHz. It also features a 64-bit memory bus, and uses a 40 nm design. It is made up of 160 SPUs, 8 Texture Address Units, and 4 Raster Operation Units.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 6450 (OEM) 31 Watts
GeForce GT 320 43 Watts
Difference: 12 Watts (39%)

Memory Bandwidth

As far as performance goes, the GeForce GT 320 should in theory be a lot superior to the Radeon HD 6450 (OEM) in general. (explain)

GeForce GT 320 25280 MB/sec
Radeon HD 6450 (OEM) 12800 MB/sec
Difference: 12480 (98%)

Texel Rate

The GeForce GT 320 will be quite a bit (approximately 159%) more effective at AF than the Radeon HD 6450 (OEM). (explain)

GeForce GT 320 12960 Mtexels/sec
Radeon HD 6450 (OEM) 5000 Mtexels/sec
Difference: 7960 (159%)

Pixel Rate

The GeForce GT 320 is quite a bit (approximately 73%) more effective at FSAA than the Radeon HD 6450 (OEM), and will be capable of handling higher screen resolutions while still performing well. (explain)

GeForce GT 320 4320 Mpixels/sec
Radeon HD 6450 (OEM) 2500 Mpixels/sec
Difference: 1820 (73%)

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 320

Amazon.com

Check prices at:

Radeon HD 6450 (OEM)

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 GT 320 Radeon HD 6450 (OEM)
Manufacturer nVidia AMD
Year February 2010 February 2011
Code Name GT215 Caicos
Memory 1024 MB 512 MB
Core Speed 540 MHz 625 MHz
Memory Speed 1580 MHz 1600 MHz
Power (Max TDP) 43 watts 31 watts
Bandwidth 25280 MB/sec 12800 MB/sec
Texel Rate 12960 Mtexels/sec 5000 Mtexels/sec
Pixel Rate 4320 Mpixels/sec 2500 Mpixels/sec
Unified Shaders 72 160
Texture Mapping Units 24 8
Render Output Units 8 4
Bus Type GDDR3 GDDR3
Bus Width 128-bit 64-bit
Fab Process 40 nm 40 nm
Transistors 727 million 370 million
Bus PCIe x16 PCIe 2.1 x16
DirectX Version DirectX 10.1 DirectX 11
OpenGL Version OpenGL 3.3 OpenGL 4.1

Memory Bandwidth: Memory bandwidth is the max amount of data (measured in MB per second) that can be transported past the external memory interface in one second. It's calculated by multiplying the interface width by the speed of its memory. In the case of DDR type RAM, it should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The better the bandwidth is, 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 number of texture map elements (texels) that can be processed per second. This figure is worked out by multiplying the total amount of texture units by the core speed of the chip. The higher the texel rate, the better the card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied per second.

Pixel Rate: Pixel rate is the maximum number of pixels the graphics card could possibly write to its local memory in a second - measured in millions of pixels per second. Pixel rate 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 rate also depends on quite a few other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the ability to reach the max fill rate.

Display Prices

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GeForce GT 320

Amazon.com

Check prices at:

Radeon HD 6450 (OEM)

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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