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Gaming Performance Comparison
In terms of overall gaming performance, the graphical capabilities of the Nvidia GeForce GT 640 Galaxy GC 1GB Edition are significantly better than the Intel HD Graphics 4600 Desktop.
The GT 640 has a 550 MHz higher core clock speed and 28 more Texture Mapping Units than the Graphics 4600. This results in the GT 640 providing 28.8 GTexel/s better texturing performance. This still holds weight but shader performance is generally more relevant, particularly since both of these GPUs support at least DirectX 10.
The GT 640 has a 550 MHz higher core clock speed and 14 more Render Output Units than the Graphics 4600. This results in the GT 640 providing 14.4 GPixel/s better pixeling performance. However, both GPUs support DirectX 9 or above, and pixeling performance is only really relevant when comparing older cards.
The Graphics 4600 was released less than a year after the GT 640, and so they are likely to have similar driver support for optimizing performance when running the latest games.
The GT 640 has 1024 MB video memory, but the Graphics 4600 does not have an entry, so the two GPUs cannot be reliably compared in this area.
The HD Graphics 4600 Desktop has 80 Shader Processing Units and the GeForce GT 640 Galaxy GC 1GB Edition has 384. However, the actual shader performance of the Graphics 4600 is 157 and the actual shader performance of the GT 640 is 365. The GT 640 having 208 better shader performance and an altogether better performance when taking into account other relevant data means that the GT 640 delivers a noticeably smoother and more efficient experience when processing graphical data than the Graphics 4600.
The Graphics 4600 transistor size technology is 6 nm (nanometers) smaller than the GT 640. This means that the Graphics 4600 is expected to run very slightly cooler and achieve higher clock frequencies than the GT 640.
The GeForce GT 640 Galaxy GC 1GB Edition requires 65 Watts to run but there is no entry for the Graphics 4600. We would recommend a PSU with at least 350 Watts for the GT 640, but we do not have a recommended PSU wattage for the Graphics 4600.
|Mini Review||Intel HD Graphics 4600 Desktop is the successor to Intel HD 4000 Desktop that's featured in the Haswell based desktop CPUs. |
It features 20 Execution Units (80 Shader Processing Units) and its central-unit speed will range between 400MHz and 1250MHz (Turbo Boost) and that the fastest memory supported is DDR3-1600 meaning its memory-clock will operate at 800MHz, at the most.
Benchmarks indicate its performance is up to 25% better than previous Intel HD 4000. However, only Iris Graphics offer performance good enough to play all modern demanding games, some even with extremely fluent frame rates.
GeForce GT 640 Galaxy GC 1GB Edition is a special edition of NVIDIA's Middle-Class GeForce GT 640, created by Galaxy.
Overclock: Central Unit
The Central Unit now runs at 950MHz, instead of 902MHz.
Overclock: Memory Clock
The Operating Memory Clock remains the same while the Frame Buffer was halved to 1GB which is adequate for the Graphics Card and will not decrease its performance.
The Cooling System remains the same.
Benchmarks indicate a 5% performance over the reference GeForce GT 640.