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Radeon HD 3470 512MB vs Radeon HD 6450 (OEM) 1GB

Intro

The Radeon HD 3470 512MB comes with a core clock frequency of 800 MHz and a GDDR3 memory frequency of 950 MHz. It also makes use of a 128-bit memory bus, and uses a 55 nm design. It is made up of 40(8x5) SPUs, 4 Texture Address Units, and 4 Raster Operation Units.

Compare all of that to the Radeon HD 6450 (OEM) 1GB, which features a clock speed of 750 MHz and a GDDR5 memory speed of 900 MHz. It also makes use of a 64-bit memory bus, and uses a 40 nm design. It is made up of 160 SPUs, 8 Texture Address Units, and 4 ROPs.

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

In theory, the Radeon HD 3470 512MB should perform a bit faster than the Radeon HD 6450 (OEM) 1GB in general. (explain)

Radeon HD 3470 512MB 30400 MB/sec
Radeon HD 6450 (OEM) 1GB 28800 MB/sec
Difference: 1600 (6%)

Texel Rate

The Radeon HD 6450 (OEM) 1GB is quite a bit (approximately 88%) faster with regards to anisotropic filtering than the Radeon HD 3470 512MB. (explain)

Radeon HD 6450 (OEM) 1GB 6000 Mtexels/sec
Radeon HD 3470 512MB 3200 Mtexels/sec
Difference: 2800 (88%)

Pixel Rate

The Radeon HD 3470 512MB should be a small bit (approximately 7%) more effective at anti-aliasing than the Radeon HD 6450 (OEM) 1GB, and should be capable of handling higher resolutions without slowing down too much. (explain)

Radeon HD 3470 512MB 3200 Mpixels/sec
Radeon HD 6450 (OEM) 1GB 3000 Mpixels/sec
Difference: 200 (7%)

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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Radeon HD 3470 512MB

Amazon.com

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Radeon HD 6450 (OEM) 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 Radeon HD 3470 512MB Radeon HD 6450 (OEM) 1GB
Manufacturer AMD AMD
Year 2008 February 2011
Code Name RV620 PRO Caicos
Memory 512 MB 1024 MB
Core Speed 800 MHz 750 MHz
Memory Speed 1900 MHz 3600 MHz
Power (Max TDP) (Unknown) watts 31 watts
Bandwidth 30400 MB/sec 28800 MB/sec
Texel Rate 3200 Mtexels/sec 6000 Mtexels/sec
Pixel Rate 3200 Mpixels/sec 3000 Mpixels/sec
Unified Shaders 40(8x5) 160
Texture Mapping Units 4 8
Render Output Units 4 4
Bus Type GDDR3 GDDR5
Bus Width 128-bit 64-bit
Fab Process 55 nm 40 nm
Transistors (Unknown) million 370 million
Bus PCIe 2.0 x16 PCIe 2.1 x16
DirectX Version DirectX 10.1 DirectX 11
OpenGL Version OpenGL 3.0 OpenGL 4.1

Memory Bandwidth: Memory bandwidth is the largest amount of information (measured in MB per second) that can be transferred past the external memory interface within a second. The number is calculated by multiplying the card's interface width by its memory speed. In the case of DDR memory, it should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The higher the card's memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that are applied per second. This figure is worked out by multiplying the total number of texture units of the card by the core speed of the chip. The better this number, the better the video card will be at handling 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 the video 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 amount of ROPs by the the card's clock speed. 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 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

Hide Prices

Radeon HD 3470 512MB

Amazon.com

Check prices at:

Radeon HD 6450 (OEM) 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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