optiplex gx620 - hardware assisted virtualization?

Thanks.

Is the reason it might need a different heat sink because of higher temps or because the current one won't fit?

We've also got a dell dimension 4600. The windows 7 upgrade advisor is saying that the driver for the graphics adapter isn't compatible. Is there a way to upgrade this? Also wondering if the cpu on this computer could be upgraded to the 960?

The 960 is a 130 Watt Cpu.  If you have the aluminum heatsink its for a 90W Cpu.

BIOS A11 is required BEFORE Changing the cpu.

Vt-x is there Vt-D is not.

The GX620 is not a dell ESX VMware server.

GX620 towers can go to Pentium D960 with a copper  performance heatsink and bios A11.

DELL OptiPlex GX620 - FAQ - Frequently Asked (and answered) Questions

http://en.community.dell.com/support-forums/desktop/f/3514/t/18593269.aspx?PageIndex=1

HEATSINK D9729     SHROUD J9761

INTEL VT support is in the Chipset & CPU as well as the Bios.

It does not show up if any of the above are not VT Capable.

Q: Does GX620's BIOS A11 support Intel Virtualization Technology?

A: Yes.

If the CPU Does not support VT the option does not show up in the bios.

Not all Pentium 4 processors support VT  there isnt any approach.  Either the CPU has it or it does not.

The only way to get it is to change the CPU to a model that supports VT.

So that leaves

Intel Pentium D 950 - HH80553PG0964M / BX80553950 / BX80553950T SL8WP, SL94P SL95V SL9K8

Intel Pentium D 960 - HH80553PG1044M / BX80553960 SL9AP SL9K7

ARK | Intel® Pentium® D Processor 945 (4M Cache, 3.40 GHz, 800 ...

Intel® Hyper-Threading Technology .	No
Intel® Virtualization Technology (VT-x) .	No
Intel® Virtualization Technology for Directed I/O (VT-d) .	No

To find out if your Intel® desktop or mobile processor supports Intel® Virtualization Technology (Intel® VT), use one of the methods below:

• Intel® Virtualization Technology List
• Intel® Processor Identification Utility

Note

A processor with Intel VT does not guarantee that virtualization will work on your system. Intel VT requires a computer system with a chipset, BIOS, enabling software and/or operating system, device drivers, and applications designed for this feature. BIOS A11 on the 620. If your BIOS includes a setting to enable or disable support for Intel VT, make sure it is enabled. For Intel® Desktop Boards, enter the BIOS by pressing the F2 key as the system starts.

 

 

We've also got a dell dimension 4600. The windows 7 upgrade advisor is saying that the driver for the graphics adapter isn't compatible. Is there a way to upgrade this?

I suggest installing a Zotac GT610 PCI or other modern PCI video card. There are no modern AGP video cards available.

Also wondering if the cpu on this computer could be upgraded to the 960?

This is a Socket 478, so CPU upgrades are limited. However, if you swap out the motherboard, CPU and memory, you can upgrade both CPU and video card in one move. The 4600 is a micro-ATX chassis, and aftermarket micro-ATX boards will fit.

HIS H435F512HA Radeon HD 4350 512MB 64-Bit DDR3
AGP 4X/8X HDCP Ready Low Profile Ready Video Card
http://www.newegg.com/Product/Product.aspx?Item=N82E16814161318