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Radeon HD 4650 512MB vs Radeon HD 5450
Intro
The Radeon HD 4650 512MB has a core clock speed of 600 MHz and a DDR2 memory frequency of 500 MHz. It also makes use of a 128-bit memory bus, and makes use of a 55 nm design. It is comprised of 320(64x5) SPUs, 32 Texture Address Units, and 8 ROPs.Compare all that to the Radeon HD 5450, which has a core clock speed of 650 MHz and a DDR3 memory frequency of 800 MHz. It also makes use of a 64-bit bus, and uses a 40 nm design. It features 80(16x5) SPUs, 8 Texture Address Units, and 4 ROPs.
Power Usage and Theoretical Benchmarks
Power Consumption (Max TDP)
| Radeon HD 5450 |
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19 Watts |
| Radeon HD 4650 512MB |
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55 Watts |
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Memory Bandwidth
As far as performance goes, the Radeon HD 4650 512MB should in theory be much superior to the Radeon HD 5450 in general. (explain)
| Radeon HD 4650 512MB |
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16000 MB/sec |
| Radeon HD 5450 |
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12800 MB/sec |
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Texel Rate
The Radeon HD 4650 512MB is a lot (more or less 269%) faster with regards to texture filtering than the Radeon HD 5450. (explain)| Radeon HD 4650 512MB |
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19200 Mtexels/sec |
| Radeon HD 5450 |
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5200 Mtexels/sec |
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Pixel Rate
The Radeon HD 4650 512MB is much (more or less 85%) more effective at full screen anti-aliasing than the Radeon HD 5450, and will be capable of handling higher resolutions without slowing down too much. (explain)| Radeon HD 4650 512MB |
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4800 Mpixels/sec |
| Radeon HD 5450 |
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2600 Mpixels/sec |
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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
Radeon HD 4650 512MBAmazon.com
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Radeon HD 5450Amazon.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
| Model | Radeon HD 4650 512MB | Radeon HD 5450 |
|---|---|---|
| Manufacturer | AMD | AMD |
| Year | Sep 10, 2008 | February 4, 2010 |
| Code Name | RV730 PRO | Cedar PRO |
| Memory | 512 MB | 512 MB |
| Core Speed | 600 MHz | 650 MHz |
| Memory Speed | 1000 MHz | 1600 MHz |
| Power (Max TDP) | 55 watts | 19 watts |
| Bandwidth | 16000 MB/sec | 12800 MB/sec |
| Texel Rate | 19200 Mtexels/sec | 5200 Mtexels/sec |
| Pixel Rate | 4800 Mpixels/sec | 2600 Mpixels/sec |
| Unified Shaders | 320(64x5) | 80(16x5) |
| Texture Mapping Units | 32 | 8 |
| Render Output Units | 8 | 4 |
| Bus Type | DDR2 | DDR3 |
| Bus Width | 128-bit | 64-bit |
| Fab Process | 55 nm | 40 nm |
| Transistors | 514 million | 292 million |
| Bus | PCIe 2.0 x16, AGP 8x | PCIe 2.1 x16 |
| DirectX Version | DirectX 10.1 | DirectX 11 |
| OpenGL Version | OpenGL 3.0 | OpenGL 3.2 |
Memory Bandwidth: Bandwidth is the largest amount of information (in units of megabytes per second) that can be transported over the external memory interface in one second. The number is worked out by multiplying the bus width by its memory clock speed. In the case of DDR type RAM, the result should be multiplied by 2 again. If 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 higher screen resolutions.
Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that are applied in one second. This is calculated by multiplying the total texture units by the core speed of the chip. The higher the texel rate, the better the graphics card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels in a second.
Pixel Rate: Pixel rate is the maximum amount of pixels the video card could possibly write to the local memory in one second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the amount of ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel rate also depends on lots of other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the ability to reach the maximum fill rate.
Radeon HD 4650 512MBAmazon.com
Check prices at:
|
Radeon HD 5450Amazon.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.
|
Comments
One Response to “Radeon HD 4650 512MB vs Radeon HD 5450”[...] much. So a GFX will be needed, as I thought. Here is another nice comparison, no benches though: Radeon HD 4650 512MB vs Radeon HD 5450 – Performance Comparison Benchmarks @ Hardware Compare Reply With [...]