Optiplex 745 Small Form Factor Upgrade

polis_putrus

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Hello, Im planning on upgrading my Optiplex 745 Small Form Factor pc

PLEASE go here help me answer my questions https://www.dell.com/community/Optiplex/Optiplex-745-Small-Form-Factor-Upgrade/td-p/6087612 THANKS FOR ALL HELP

SPECS:
Core 2 Duo E6400 2.13Ghz Socket LGA 775
7GB RAM 3x2GB 1x1GB DDR2
275w Power Supply (Not Upgradeable)
80GB Western Digital Harddrive
+ to save power I disconnected the cd drive
(I have the latest bios version 2.6.6)

UPGRADE:
Core 2 Quad Q6700 2.66Ghz Socket LGA 775 $16.99 - ebay
1,000Gb Hard Drive $45.99 - ebay
AMD Radeon R5 240 1Gb Low profile Graphics $24.90 - ebay ( or should I get R7 240 )

Before I buy I was wondering if the new cpu WITH the graphics card will work, I do know the cpu will work without the graphics card and I do know the graphics card will work with the original cpu BUT im not sure what will happen when I get both the new cpu and the new graphics card (Please let me know if the cpu will overheat or not), will it go over 275w on the power supply. I might also throw away all my old ram and buy new 8GB RAM because ever since I upgraded the RAM from 3GB to 7GB it does blue screen after 30-60min of use: paged_fault_in_non_paged_area there are more errors than this but this is most common.

NOTE: I went to coolermaster.com (psu calculator) and put all my UPGRADED pc specs and it says load wattage: 276w :Dlol 1 watt over, is this ok (I actually put, for the graphics card r7 240, as there was no r5 240, they do use the same watts though)

Please let me know if this upgrade plan will work, I am going to be gaming, BUT not on highest settings medium to low 1280x720 I will be playing Grand Theft Auto V, Call of Duty 2, Minecraft, Far Cry 1 and 2, Left 4 Dead 1 and 2, Battlefield 2, Counter Strike: Source, Counter Strike: Global Offensive, Just Cause 1 and 2, Mercenaries 2 World in Flames, Grand Theft Auto: San Andreas, and 10-20 more. (This is why I need 1000GB harddrive)

Thanks For Any Help.
 
Solution
Here is a test of a quality aftermarket 350W PSU with a 6 pin PCIe cable.
https://www.kitguru.net/components/power-supplies/zardon/seasonic-tfx-350w-psu-review/
Here is a test of a random used Dell Optiplex 305W PSU w/o one.
https://www.hardwareinsights.com/dell-h305p-01-power-supply-review/
One of them makes over 400W.
The reason Dell put a 275W rating on your PSU is because the SFF has less expansion slots, and drive bays than the Tower that had the 305W. That PSU will power anything you can connect to it using the connectors provided on the PSU and motherboard. Up to a GTX1050Ti 4GB.( The MB might not support it but the PSU will.) That 275W PSU is actually what I use to upgrade the 255W PSU they used in later SFF with a 95W CPU...

spdragoo

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https://www.dell.com/downloads/global/products/optix/en/opti_745techspecs.pdf

http://www.dell.com/content/topics/topic.aspx/global/products/optix/topics/en/optiplex_intel?c=us&l=en&cs=04

I strongly suspect that the Q6700 (4C/4T) is not going to be supported, as both sites specifically mention the Core 2 Duo being supported (with the 2nd one specifically stating "up to the E6700"). Could be a BIOS limitation, or it could be a TDP limitation (E6700 is a 65W TDP, Q6700 is a 95W TDP). Either way, I wouldn't be surprised if the CPU won't POST.

Also, you're very likely limited to a GPU that only requires 75W, & only straight from the PCIe slot. Any GPU that requires a PCIe power connector is almost certainly doomed to failure in that system, even if you used Molex-to-PCIe convertors.
 


You are correct with the tdp limitation. These pc's cannot accept core 2 quads.
With the core 2 duo limitation and the already weak upgraded gpu he'll have a hard time playing most of those games with acceptable framerates.

Another option is to just get a used second gen or up i5/i3 and put a decent gpu in there.
 
The Opti 745 originally had support for Pentium4 and PentiumD CPUs. The Core 2 support list is just old info because the Quads didn't exist yet. I've run QX6800 in the MT version and overclocked them. With the latest BIOS it should run Q6700 with no problem, and could support a Q6600 G0 with pinmod to 3 GHz easily. The QX6800 base clock is 2.93GHz.
A built 745 would have QX6800, 8GB DDR2 800 low density RAM.
The SFF lists a 25W GPU limit which many people ignore. It also says 667 RAM speed for 8GB. I avoid the SFF due to these issues.
The XPS 210/Dimension 9200C were the high powered SFF from that era. The MB will fit but the rear I/O will need cutting, and the front I/O board and cable may need to be swapped also.
https://www.serversupply.com/products/part_search/pid_lookup.asp?pid=109230&gclid=EAIaIQobChMI1bOLqLzV2gIVkR2BCh33-AjaEAQYASABEgKsBPD_BwE
JP911 is the heatpipe cooler for the SFF BTX.
https://www.google.com/search?q=Jp911&rlz=1C1CHBF_enUS774US774&oq=Jp911&aqs=chrome..69i57j0l4j69i59.3320j0j8&sourceid=chrome&ie=UTF-8
 

polis_putrus

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polis_putrus

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Are you sure... because take a look at this ( https://www.youtube.com/watch?v=8H1eJtZDkqY ) it is the exact same pc as mine. Also see this ( https://www.dell.com/community/Desktops-General/Optiplex-745-Small-Form-Factor-Upgrade/td-p/4431218 ) it says that r7 240 should work even r7 250, the only thing im not sure about is putting the r5 240 with the core 2 quad q6700. Here is another thread ( http://www.tomshardware.com/answers/id-2446141/dell-optiplex-745-sff-gpu.html ) and this one is about r7 240... im not even getting r7 240 im getting r5 240. Guys please look here on the very bottom it says r5 240 uses 30w only and the r7 240 also does ( http://www.game-debate.com/gpu/index.php?gid=3484&gid2=2404&compare=radeon-r5-240-v1-vs-radeon-r7-240-2gb )
 


Best thing you can do is save up money and forget about that SFF completely.

You can forget about most of those newer games if you plan on keeping it.

Look for a NON SFF I5 system or better yet build one.
 
At userbenchmark.com Opti 745 you will see dozens of them with Quads. Q6800 are all 130W Core 2 extremes QX6800. I got my Mid tower up to 3.45GHz.
http://www.userbenchmark.com/System/Dell-OptiPlex-745/3949.
Don't worry about it. Just get the heatpipe cooler. You're nowhere near the limits for that machine. Some people report running GTX750 in those without issues. But it IS out of spec. so it's up to you if you want to try something like that.
 

polis_putrus

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By the way im only 15, I cant forget about it... I got it from swap meet it was on the side under some clothes I moved the clothes and I saw the computer (at the time I had no computer) and quickly I grabbed it and took it to the car when we got home I took it out fixed it installed windows 7 64-bit, and it worked, thats how I got it (my mom barely let me get it, she said "PUT IT BACK" but it still took it to the car and she forgot), my mom knows how it looks and if I get a new one... SHE WILL NOTICE. I have very little money I can only afford like $80-$90 on upgrades (I got the ram for free...I took out of my moms pc and put in mine I, then put mine in her's, she does only use her computer for like cragistlist and other stuff ). I actually would love to buy a non-sff computer I also hate sff, but sadly I cant.
 

polis_putrus

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Calvin that doesnt matter that is what they recommend what matters is how much watts it uses.
 

polis_putrus

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Jaslion the r5 240 is actually pretty good.
 


Better than pouring money into that, you will see that it's throwing money away.

 
The whole trick to running something like this is to stay at low resolutions on the monitor. An old 720P flat screen TV will work just fine.
The RAM config. is incorrect. You should have 2 of each matching RAM 2x2GB+2x1GB=6GB would be good, or 2x4GB=8GB. It's called Dual channel. each RAM Module needs a matching one to pair up with so they take turns procoessing data.
You learn more working on a difficult system like this than on a one size fits all ATX anyway. So it's not a bad place to start.
You should be careful what kind of habits you develop in acquiring things. When you get older there will be consequences. Lost jobs, opportunities that get offered to other people, broken freindships. It can add up over time. Just an old farts 2 cents worth.
 


It's a basic display adaptor. It can just about run skyrim at 1080p at medium-low settings. If thats all the money you can spend then just get it and start saving up and doing some jobs to get a capable pc later.
 

polis_putrus

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Wow thank you I wonder if this will fix my ram issue, BUT it is setup the way it is because one of the ram sticks was 2GB, but it was corrupt, so I took it out put it on top of my bookshelf, and put in a 1GB ram stick in place of the 2GB
 

polis_putrus

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Guys all I need to know is if the core 2 quad q6700 will work with R5 240 in my pc. I am 99% positive the graphics card will work alone by it self without the core 2 quad q6700, and im 95% positive the processor will work by itself without the R5 240, Please if you guys want to suggest another graphics card, tell me about these: HD 5570, HD 6450, HD 6570, HD 6770, HD 7450, HD 7570, HD 7770, R7 240, R7 250.

NOTE: Im actually wating on a Core 2 quad q6600, but I soon realised I made a mistake, I went to coolermaster.com and inserted my pc specs with the core 2 quad q6600, then I inserted my pc specs with the core 2 quad q6700 and it show that the core 2 quad q6600 used more power.
 
There are 2 different Q6600. An older B3 stepping, and the newer G0. You can tell them apart by the Sxxxx spec.
http://www.cpu-world.com/CPUs/Core_2/Intel-Core%202%20Quad%20Q6600%20HH80562PH0568M%20(BX80562Q6600).html
SL9UM is the old 105W CPU, and SLACR is the newer 95W version. The Qxxx numbers are experimental versions and aren't supposed to be sold.
You will also notice different thermal limits too. Q6700 are all G0 chips.
http://www.cpu-world.com/CPUs/Core_2/Intel-Core%202%20Quad%20Q6700%20HH80562PH0678MK%20(BX80562Q6700).html
So next time look the CPU up and shop by the S Spec. to find the best ones.
QX6800 is like that also. SL9UK, and SLACP.
http://www.cpu-world.com/CPUs/Core_2/Intel-Core%202%20Extreme%20QX6800%20HH80562PH0778M%20(BX80562QX6800%20-%20BX80562PH0778M).html
Even if you don't overclock the QX6800 is 2.93GHz which is as good as it gets on an old machine like that.
Overclockers loved the Q6600 SLACR because it was much cheaper than the Q6700 and overclocked easily to 3GHz, The better Q6700 gets ignored due to this and can be cheaper now. There's a learning curve to this. Nobody gets it right the first time.I went thorough E6300, E6700,Q6700, QX6700,QX6800 SL9Uk, QX6800 SLACP on my old Dimension E520. You don't need to obsess about power with that machine. It can run a 130W CPU just fine.
JP911 cooler for the quads though.
 

polis_putrus

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The reason I want to get Core 2 quad q6700 instead of Core 2 quad q6600 is 1. because I will not be overlocking I might even be underclocking becuse of high load wattage 2. because I went to ( coolermaster.com/power-supply-calculator ) and I inserted my specs with the core 2 quad q6600 and then I inserted my specs with the core 2 quad q6700, and the resault was 10-20w decrease with the Core 2 quad q6700, thats why.
 

polis_putrus

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I will not be underclocking anymore Ive changed my mind I will get a PNY Geforce GT 710 2GB Low Profile, with this graphics card it uses less power than the R5 240. at ( coolermaster.com/power-supply-calculator ) I calculated my specs:Core 2 quad q6700 and Geforce 710 and it said load wattage: 265w but with Core 2 quad q6700 and R7 240 (I chose R7 240 instead of R5 240 because there was no option for R5 + they use same ammout of wattage) it said load wattage: 276w so I will be getting Geforce 710 instead since it uses less power remember, my psu is 275w + it is 2GB and there was no R5 240 2GB that would fit
Please let me know if Geforce 710 will work.
 


Any of those low end GPU's are terrible in game play if they will run them at all, especially with the newer games.

Combine that with the outdated rest of the system and you are in for a hard road.
 
Here is a test of a quality aftermarket 350W PSU with a 6 pin PCIe cable.
https://www.kitguru.net/components/power-supplies/zardon/seasonic-tfx-350w-psu-review/
Here is a test of a random used Dell Optiplex 305W PSU w/o one.
https://www.hardwareinsights.com/dell-h305p-01-power-supply-review/
One of them makes over 400W.
The reason Dell put a 275W rating on your PSU is because the SFF has less expansion slots, and drive bays than the Tower that had the 305W. That PSU will power anything you can connect to it using the connectors provided on the PSU and motherboard. Up to a GTX1050Ti 4GB.( The MB might not support it but the PSU will.) That 275W PSU is actually what I use to upgrade the 255W PSU they used in later SFF with a 95W CPU limit.
Here's another test. Only one survived.
http://www.jonnyguru.com/modules.php?name=NDReviews&op=Story&reid=71
The smallest GPU I would put in there is a GT730 64 bit 1GB DDR5 card, and run it at 720P. GT1030 would be much better.
Coolermaster is just trying to scare you into buying one of their overrated PSUs. They don't even make one that fits that computer.
 
Solution

polis_putrus

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R7 240 is actually pretty good even R5 240 is, I dont know what your talking about take a look ( https://www.youtube.com/watch?v=63RW8IVn-mE ) let me know what you think.