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Gaming Performance Comparison

In terms of overall gaming performance, the graphical capabilities of the Nvidia GeForce 8600 GT are marginally better than the Nvidia GeForce GT 620.

The GeForce GT 620 has a 270 MHz higher core clock speed than the GeForce 8600 GT, but the GeForce 8600 GT has 8 more Texture Mapping Units than the GeForce GT 620. As a result, the GeForce 8600 GT exhibits a 2.1 GTexel/s better Texture Fill Rate than the GeForce GT 620. This still holds weight but shader performance is generally more relevant, particularly since both of these GPUs support at least DirectX 10.

The GeForce GT 620 has a 270 MHz higher core clock speed than the GeForce 8600 GT, but the GeForce 8600 GT has 4 more Render Output Units than the GeForce GT 620. As a result, the GeForce 8600 GT exhibits a 1.1 GPixel/s better Pixel Fill Rate than the GeForce GT 620. However, both GPUs support DirectX 9 or above, and pixeling performance is only really relevant when comparing older cards.

The GeForce GT 620 was released over three years more recently than the GeForce 8600 GT, and so the GeForce GT 620 is likely to have far better driver support, meaning it will be much more optimized and ultimately superior to the GeForce 8600 GT when running the latest games.

The GeForce GT 620 has 768 MB more video memory than the GeForce 8600 GT, so is likely to be much better at displaying game textures at higher resolutions. However, the overall memory performance is about the same.

The GeForce 8600 GT has 8 GB/sec greater memory bandwidth than the GeForce GT 620, which means that the memory performance of the GeForce 8600 GT is marginally better than the GeForce GT 620.

The GeForce GT 620 has 48 Shader Processing Units and the GeForce 8600 GT has 32. However, the actual shader performance of the GeForce GT 620 is 96. The GeForce GT 620 having 64 better shader performance is not particularly notable, as altogether the GeForce 8600 GT performs better when taking into account other relevant data.

The GeForce GT 620 transistor size technology is 40 nm (nanometers) smaller than the GeForce 8600 GT. This means that the GeForce GT 620 is expected to run much cooler and achieve higher clock frequencies than the GeForce 8600 GT. As they exhibit similar graphical performance, the GeForce GT 620 should consume less power than the GeForce 8600 GT.

The GeForce GT 620 requires 30 Watts to run and the GeForce 8600 GT requires 47 Watts. We would recommend a PSU with at least 400 Watts for the GeForce GT 620 and a PSU with at least 350 Watts for the GeForce 8600 GT. The GeForce 8600 GT requires 17 Watts more than the GeForce GT 620 to run. The difference is not significant enough for the GeForce 8600 GT to have a noticeably larger impact on your yearly electricity bills than the GeForce GT 620.

GPU Core Details

Core Speed810 MHzvs540 MHz
ArchitectureFermi GF119G84
Notebook GPUnono
SLI/Crossfirenovsyes
Dedicatedyesvsyes
Release Date01 Apr 201201 Apr 2007
GPU LinkGD LinkGD Link
Approved
Comparison

GPU Memory

Memory1024 MBvs256 MB
Memory Speed900 MHzvs700 MHz
Memory Bus64 Bitvs128 Bit
Memory TypeGDDR3vsGDDR3
Memory Bandwidth14.4GB/secvs22.4GB/sec
Comparison

GPU Display

Shader Processing Units48vs32
Actual Shader Performance96vs32
Technology40nmvs80nm
Texture Mapping Units8vs16
Texture Rate6.5 GTexel/svs8.6 GTexel/s
Render Output Units4vs8
Pixel Rate3.2 GPixel/svs4.3 GPixel/s
Comparison

GPU Display Tech

DirectX11vs10
Shader Model5.0vs4.0
Open GL4.2vs2.1
Max Resolution (WxH)2560x1600vs2560x1600
VGA Connections1vs0
DVI Connections1vs2
HDMI Connections1vs0
Comparison

GPU Power Requirements

Max Power30 Wattsvs47 Watts

GPU Supporting Hardware

Recommended RAM4 GBvs3 GB
Recommended Screen Size1024x7681024x768
Recommended PSU400 Watts & 18 Ampsvs350 Watts & 24 Amps

Gaming Performance Value

Performance Value

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GPU Mini Review

Mini ReviewGeForce GT 620 (OEM) is an entry level Graphics Card still based on the 2010, 40 nm Fermi architecture.
It's based on the Fermi GF119 Core and offers 48 Shader Processing Units, 8 TMUs and 4 ROPs on a 64-bit memory interface of 1GB DDR3. The central clock runs at 810MHz and the memory clock operates at 898MHz. Expect a power consumption of up to 30 Watts.
It's therefore a renamed GeForce GT 520 and performs like it. This Graphics Card can be paired with any 2012 average Dual-Core CPU.
GeForce 8600 GT is a middle-class GFX based on the 80nm variant of the first-shader unified architecture.
It's based on the G84 Core and offers 32 Shader Processing Units, 16 TMUs and 8 ROPs, on a 128-bit memory interface of GDDR3. The central unit runs at 540MHz and the memory clock operates at 700MHz. It will consume no more than 47 Watt.
It performs much better, when compared to GeForce 8600 GS, thanks to the extra Shading Units and remains within the same power envelope (47 Watt) due to being equipped with GDDR3 (against 8600 GS's DDR2).
This GPU is only suited for a 1024x768 (or less) resolution. Some of today's games will run at medium settings although extremely demanding games might not run at all. DirectX 11 based games aren't supported and its performance will decrease drastically, as the resolution increases.
Recommended CPUIntel Pentium 4 HT 620
Intel Pentium 4 HT 551
Intel Pentium 4 HT 550J
AMD Athlon 64 3800+
Intel Pentium 4 550-550J 3.4GHz
AMD Athlon 7750 Dual Core
AMD Opteron 8220
AMD Opteron 8220 SE
Intel Celeron E3200 Dual-Core 2.4GHz
AMD Athlon II X2 4400e
Possible GPU Upgrades-GeForce 9800 GX2 SSC Edition
GeForce GTX 650 Palit 1GB Edition
GeForce GTX 650 Inno3D 1GB Edition
GeForce GTX 650 Galaxy Green Edition
GeForce GTX 650 MSI 1GB
GPU VariantsGeForce GT 620 512MB
GeForce 8600 GT Inno3D 256MB GDDR2
GeForce 8600 GT Inno3D 1GB GDDR2
GeForce 8600 GT Inno3D 512MB GDDR2
GeForce 8600 GT Asus Magic 512MB DDR2
GeForce 8600 GT 512MB GDDR3
GeForce 8600 GT 256MB DDR3 Fatal1ty Edition