indeed, considering that Dell doesn't even offer Windows 10 drivers for that machine, I'm sorta amazed it's running at all.
The drivers were a lot of trouble on upgrading however I found some to make it work (Win 7/8 ones I think) I got the PC from eBay for £25 refurbished. Sound driver was the worst problem I have its the wrong driver but I got rid of the error message and it works but now I just want to upgrade it to it's best possible. I found a CPU for under £30 but just need to confirm if Intel Core 2 Quad Q6600 will work in it but I read elsewhere it should but I'd rather have confirmation.indeed, considering that Dell doesn't even offer Windows 10 drivers for that machine, I'm sorta amazed it's running at all.
Thanks for the links they were helpful and good answers too, my last question is since someone said if I am upgrading CPU, Graphics and RAM is that I will need a better power supply, could anyone send me a link or name for one?On your first question, the OptiPlex 745 will support the Q6600 if you have the latest BIOS installed; though, you may have fun getting it installed if its an older version because of the Windows 10 issue: http://www.dell.com/support/home/us/en/19/Drivers/DriversDetails?driverId=GRJ7T
You may be able to see the current version of the BIOS with WinKey+R and MSINFO32<enter> or by hitting F2 while the Dell logo is still on the screen.
The 745's will run most socket 775 processors as long as the front side bus is 1066Mhz or lower AND it is supported by the BIOS version (Dell's have a nasty habit of popping an "unsupported CPU detected" message up and refusing to boot)
On your second question, it depends entirely on which case you have; USFF, SFF, Desktop, or Minitower. All but the minitower will require a low-profile video card AND use a proprietary power supply so you won't be able to upgrade it.
Choose "view a different product" and type in the SERVICE TAG number of your PC to be accurate:
I have put one of these in a 745:
The main use for it right now is to watch TV shows ect but I would like to have an HDMI port and if it runs my games that would just be a bonus but also at a later date to run CCTV in the background.Are you thinking about using that Dell OptiPlex 745 for gaming?
That's usually the reason when someone wants to upgrade to a faster processor and add a graphics card.
I looked on the Dell site and used the service tag to get the specs and here's what I found:Do you have the tower model? From the Dell forums"Not in the Desktop SFF USFF. And only with latest bios and motherboard revision" Here is a link http://en.community.dell.com/support-forums/desktop/f/3514/t/19631188 If you get the Q6600 you need to get the "SLACR" chip GO stepping, it is the 95 watt version. On your ram, to get 8GB you have to get 4-2GB modules.
They have some Q6600's on ebay here http://www.ebay.co.uk/sch/i.html?_from=R40&_sacat=0&_nkw=Q6600 - 2.4GHz Quad-Core SLACR&rt=nc&LH_BIN=1&_trksid=p2045573.m1684 On some of the specs they show 105 watt but the SLACR is supposed to be the 95 watt version.
Okay is there another graphics card you can recommend that has an HDMI port but doesn't require a power supply upgrade. If not could you recommend a power supply aswell and fan.The GT 740 LP uses 65 watts , recommends a 400 watt supply. They don't make a bigger supply for the SFF. The only thing you could do is take the original out, replace it with a fan and put a 600watt behind it and run the wires inside.