Help me find a PSU - Optiplex's Mini Tower - 760

Mar 26, 2013
17
0
10,510
So I have the Dell's Optiplex 760 Mini Tower and plan on upgrading my PSU.

My budget is ~$30 or 30 euros

My current setup:

250W stock Dell PSU

E8400 processor (I plan to upgrade this to either a modified Xeon E5450 or a c2q, keep that in mind when searching for the PSU)

4GB DDR2 RAM (Might upgrade too)

HD7750 1GB GDDR5

If possible, I'd like the PSU to have a 6+2 pin for graphics. 6-pin only is alright too.
 
Solution


GraphicCardProblems,

To make certain that we are discussing the same system, the Optiplex 760 Mini-Tower is this one:

http://www.ebay.de/itm/Dell-OptiPlex-760-MT-Intel-Core2Duo-E8400-2-3-0GHz-250GB-4GB-DVD-Rom-DVI-/252282213852?hash=item3abd3115dc:g:cRoAAOSwpDdU7cIo

The enquiry to have a power supply that would support planned upgrades. My idea was that if you have the Optiplex 760 Mini-Tower, you can fit an original 305W Optiplex 780 PSU as the cases are the same dimension.

Original DELL Netzteil NH493 L305P-01 305w für OptiPlex 740 745 755 760...
if me I would find out what card will work in that dell and be 100% sure they will before I invest in any thing .. that dell proprietary bios may not support higher end or newer cards no matter what you do psu wise . [opinion]

my disclaimer

some models of store bought computers [dell.hp,acer,ect..] may come with a ''locked or fixed'' bios and may not allow you to change certain hardware as a video card.. this is done to protect them from undue warranty claims and refunds .this is not done to hurt you but to protect them. you really need to see if that upgrade has been proven to work in your model first before you invest money in it .. there are a lot of these threads here at toms to look at some models will allow upgrades and some dont.. and a lot of guys here say ya ya ya when is really no no no...it would be sad you spent $200 on a card that wount post after you installed it as most find out. then get told its your psu and you spend more and end up right back where you are now, but its up to you good luck..


you got to know the the boards in these computers are not like the ones we use to do custom builds witch are open to upgrading with in the boards compatibly . the bios is custom made for there design and just for the parts they authorize to be used on there computers there only guaranteed to work as is out of the box as you bought it ,..


also these boards do not have to meet atx standards and there pci-e slot power may not do the required 75w needed for most higher end cards and can be limited to say 45 or 60w that is all thats needed with the low end factory oem cards that it may of shipped with


in the end -- you buy - you try -- and hope it don't make you cry

good luck

for fun
http://en.community.dell.com/support-forums/desktop/f/3515/t/19580048

may check fit as that is a btx board and a small formfactor case that may only except a low pro or half height card as well ?
 
Mar 26, 2013
17
0
10,510

I'm ok with the GPU part, my 7750 is working as intended, I think you didn't understand the question :D

I'll be upgrading the cpu (to quad core) and RAM (from 4 to 8GB) so I need a better PSU. That's why I'm asking for some help. :)
 
sorry anyway cant hurt to do so ? does dell have a cpu support list for chips that they allow or supported under there bios ?? sure todays memory modules will work in that old board ?? the boards bios has to be able to support a chip so not all chips are just plug and play [that's with any build or board ]

kinda like said here

Hi, I'm Jewel with Kingston Technical Support and would like to offer our assistance. It is possible that the HyperX 4GB memory modules are Single Rank as the latest builds of that part number are Single Rank. Up until recently 4GB modules were standard Dual Rank. Basically, the issue that can occur is that the memory module uses high capacity individual memory chips (DRAM) that the motherboard is not equipped to recognize. Usually, if a motherboard is able to recognized standard 8GB modules it should not have an issue recognizing Single Rank 4GB modules. A "1R" may be printed on the label which would indicate it as single rank. Otherwise, we can confirm this based on a reference number printed on the memory label that we can look up in our system. Other common issue with the DDR2/DDR3 combo motherboards that can be overlooked is that it only supports DDR2 OR DDR3 memory. This means you cannot have both DDR2 AND DDR3 memory installed at the same time, it is an either/or option. We do not currently support your PFG41C-M LX motherboard as we no longer manufacture memory that would be compatible with that motherboard. For any further assistance, please call us at 1-800-435-0640 (USA and Canada only) M - F 6am - 6pm PT and I or another available Technician will assist you. Please be sure to have the part in question on hand when you call.

http://en.community.dell.com/support-forums/desktop/f/3514/t/19377487
 


CraphicCardProblems,

To see a list of CPU candidates, there are a couple of ways to check compatibility.

1. Find out the chipset used by the Optiplex 760, which is "Intel Q43 Express Chipset
w/ICH10" and go to the Intel ARK site and search: "Q43 Express Chipset" .this takes you to this page:

http://ark.intel.com/products/36526/Intel-82Q43-Graphics-and-Memory-Controller-Hub

2. On the upper left menu, click on "Compatible Products":

http://ark.intel.com/products/36526/Intel-82Q43-Graphics-and-Memory-Controller-Hub#@compatibility

3. And this displays a list of all the CPU's that can run on the Q43.

4. However, the socket and FSB of these CPU's varies so do another ARK search for: "E8400" as you know that CPU works:

http://ark.intel.com/products/33910/Intel-Core2-Duo-Processor-E8400-6M-Cache-3_00-GHz-1333-MHz-FSB

This shows some important filtering information: The socket is LGA775, the FSB is1333, and the lithography is 45nm.

5. Then a search for the proposed E5450:

http://ark.intel.com/products/33083/Intel-Xeon-Processor-E5450-12M-Cache-3_00-GHz-1333-MHz-FSB

Right away, it shows a problem with using the E5450 as the Socket is LGA771.

6. My method of choosing the best performing CPU, GPU, or drive upgrade is to go Passmark and do searches of benchmark results. If I search "Optiplex 760" and filter by rating.

I see there have been 302 systems tested. The highest ratings in each category are:

RatIng: ___ 2242 (Q9650 /Intel 320 160GB SSD / 8GB RAM
CPU: _____ 4602 (Q9650) The highest E8400 score is 3546
2D _______ 604 (GeForce 9300 GE)
3D: ______ 4630 (GTX 760) Also good is at No. 2: 3619 (GTX 750 Ti )
Mem: ____ 1053 (8GB)
Disk: _____ 2661 (Samsung 850 Pro)

This is a useful exercise to plan the overall upgrade. My theory is that these systems are probably running on the original 305W Mini Tower PSU. The E8400 is 65W, the E5450 is 80W and the Q9650 is 95W, a spread of only +30W. The fastest GPU's is the GTX 760 which uses 130W, but the second place 750 Ti uses only 60W. Checking the specifications the Q9650 was sold new in the Optiplex 980, which shares the same case and also has the 305W PSU.

So the answer might be for the best overall cost /performance results to: buy a Q9650, GTX 760 or GTX 750 Ti, and a NOS Optiplex 780 305W PSU:

Genuine DELL MK9GY Optiplex 760 780 Mini Tower 305W Power Supply H305P-02 > sold for $30

http://www.ebay.com/itm/Genuine-DELL-MK9GY-Optiplex-760-780-Mini-Tower-305W-Power-Supply-H305P-02-/251689334213?hash=item3a99da75c5:g:5dcAAOSwU9xUSUhJ

> or possibly a better idea- there are upgrades:

NEW 500W Quiet Replacement power supply for Dell Optiplex 780 760 745 Mini Tower > $55.00

http://www.ebay.com/itm/NEW-500W-Quiet-Replacement-power-supply-for-Dell-Optiplex-780-760-745-Mini-Tower-/272126453740?hash=item3f5c0027ec:g:aCAAAOSwzhVWtl9S

I should say this is an example. I don't anything about this particular product or seller, there are other choices.

Cheers,

BambiBoom

1. HP z420 (2015) > Xeon E5-1660 v2 (6-core @ 3.7 / 4.0GHz) > 32GB DDR3 1866 ECC RAM > Quadro K4200 (4GB) > Intel 730 480GB (9SSDSC2BP480G4R5) > Western Digital Black WD1003FZEX 1TB> M-Audio 192 sound card > 600W PSU> > Windows 7 Professional 64-bit > Logitech z2300 speakers > 2X Dell Ultrasharp U2715H (2560 X 1440)>
[ Passmark Rating = 5064 > CPU= 13989 / 2D= 819 / 3D= 4596 / Mem= 2772 / Disk= 4555] [Cinebench R15 > CPU = 1014 OpenGL= 126.59 FPS] 7.8.15

2. Dell Precision T5500 (2011) (Revised) > 2X Xeon X5680 (6 -core @ 3.33 / 3.6GHz), 48GB DDR3 1333 ECC Reg. > Quadro K2200 (4GB ) > PERC H310 / Samsung 840 250GB / WD RE4 Enterprise 1TB > M-Audio 192 sound card > 875W PSU > Windows 7 Professional 64> HP 2711x (27", 1920 X 1080)
[ Passmark system rating = 3844 / CPU = 15047 / 2D= 662 / 3D= 3500 / Mem= 1785 / Disk= 2649] (12.30.15)
 


GraphicCardProblems,

To make certain that we are discussing the same system, the Optiplex 760 Mini-Tower is this one:

http://www.ebay.de/itm/Dell-OptiPlex-760-MT-Intel-Core2Duo-E8400-2-3-0GHz-250GB-4GB-DVD-Rom-DVI-/252282213852?hash=item3abd3115dc:g:cRoAAOSwpDdU7cIo

The enquiry to have a power supply that would support planned upgrades. My idea was that if you have the Optiplex 760 Mini-Tower, you can fit an original 305W Optiplex 780 PSU as the cases are the same dimension.

Original DELL Netzteil NH493 L305P-01 305w für OptiPlex 740 745 755 760 780 > Sold for EUR 15,00

http://www.ebay.de/itm/Original-DELL-Netzteil-NH493-L305P-01-305w-fur-OptiPlex-740-745-755-760-780-/351613631934?hash=item51ddce3dbe:g:KqwAAOSwZ1lWfjxe

That is the least expensive option. Or, buy a new 500W or 550W upgrade that is designed to fit in that case. In either example, you can take the spare Molex 4-pin power connector and add a Molex to 6-pin adapter.

Cheers,

BambiBoom


 
Solution