HP compaq 6305 PRO SFF

[NonSequitur777]

@Michal212,

Your HP Compaq Pro 6305 SFF's power supply according to https://support.hp.com/us-en/document/c03522674#AbT3 and: http://h10032.www1.hp.com/ctg/Manual/c03916065.pdf is only 240 watt (p/n: 613763-001) without PCIe 6+2 / 8-pin power cable(s).

Please note: as per the aforementioned links, HP recommended at most a Nvidia GeForce GT 630 2GB.

The minimum power supply requirement for a Nvidia T600 is 200 watt, so that would work. Incidentally, the T600 is a great budget GPU, not a bad choice at all if you choose to muddle along with an underpowered non-ATX power supply.

Minimum power requirements for a GTX 1050 Ti = 300 watt: GeForce GTX 1050 Ti | Specifications | GeForce (nvidia.com)

Minimum power requirements for a GTX 1650 = 300 watt: GEFORCE GTX 1650 (nvidia.com)

etc.

And you need to make sure to get a low-profile graphics card in order for it to dimensionally fit in your SFF case.

And here are two pictures each of a (heavily) modified HP Compaq 8300 USDT and a (heavily) modified HP Pro 6300 SFF:

See: UserBenchmark: HP Compaq Elite 8300 USDT Compatible Components (#1 through #5 pertain to this rig with different configurations)

See: UserBenchmark: HP Compaq Pro 6300 SFF Compatible Components

 (#1 through #3 & #5 through #8 pertain to the two HP Pro 6300 SFF rigs with different configurations, the one shown above has a Xeon E3-1290 V2 processor, the other is fitted with an Intel i7-3770K)

Hope this was helpful.

Kind Regards,

NonSequitur777

[Michal212]

Thanks for pictures. Nicely done. 

[DGroves]

you have a fixed amount of available watts from the current power supply this unit can power the system with all ram slots filled and a optional sec HD and the cpu along with two add-in pci-e cards (15 watts each) along with a 35 watt video card

if your system is not fully kitted out then 5 more watts for the video card is not a issue

the pci-e spec allows up to 70 watts from the pci-e slot PROVIDING THE EXISTING POWER SUPPLY CAN SUPPLY IT, in your case the answer is mostly no unless you install a low power "S" suffix cpu only 2 dimms and only one HD and no other add-in cards except for the 70 watt video card

[Michal212]

I managed to get my hands on a cheap Microtower HP compaq 6300 i5 3470. Its on its way. Should be working, according to the description. If not I will transfer my 6305 into it. 

I have to research which PSU will fit in. Any advice that could save my time would be much appreciated.  

Another thing the extra RAM I got for my SFF is 1.35V. Will I be able to fit it in 6300 MT C3A33ET. From what I remember it takes 1.5v but not 1.35. Not sure though.

[DGroves]

the micro tower case will fit a standard ATX power supply, you will also need a ATX 24 pin to HP 6 pin power adapter since the HP motherboard does not use a 24 pin power connector

https://www.amazon.com/COMeap-Power-Adapter-Workstation-12-inch/dp/B06XW7RWNH

a name brand 550/750 watt supply is recommended depending on the video card being installed

skip those no name  units that say 700 watts for 24.00 (you buy cheap you get cheap crap!)

[NonSequitur777]

@Michal212,

Incidentally, @DGroves' CoMeap 24 Pin to 6 Pin ATX Power Adapter Cable was exactly what I used to upgrade two HP Compaq Pro 6300 SFF desktops.  This power adapter cable is also compatible with your HP Compaq 6305 Pro SFF.  You can find lots more info in my HP Compaq Pro 6300 SFF upgrade link if you so choose:  https://h30434.www3.hp.com/t5/Desktop-Hardware-and-Upgrade-Questions/Upgrading-HP-Compaq-Pro-6300-SF....

Hope this is helpful.

Kind Regards,

NonSequitur777

[Michal212]

My MT6300 arrived yesterday Its dusty but is working. I work overtime now so unfortunately this project is on hold. 

[NonSequitur777]

@Michal212,

The 1.35 volt RAM sticks are fine.  As long as it is DDR3 PC3-12800, 1600 MHz, NON-ECC, UDIMM, 240-pin, you are good to go.

Couple of observations: the HP Compaq Pro 6300 Microtower is very upgradable, starting with the 320 watt power supply -unless you are happy with a GTX 1650, then you are set.  I would still strongly recommend to use the CoMeap 24 Pin to 6 Pin ATX Power Adapter Cable to be able to link your MT to a more powerful power supply.  With the added room of an MT, you may very well be able to park an ATX power supply inside your case using the adapter cable.

Second, you may want to consider upgrading your CPU with an i7-3770.

Kind Regards,

NonSequitur777

[Michal212]

Thanks. 

I've ordered that power adapter. But all the rest will probably take some time. No point in buying new things. I will start with the PSU and leave the CPU for last. GPUs from crypto are being dumped on the market now. Food is getting really expensive and people will spend less on other stuff just to be able to eat so things that you dont need to survive should get cheaper for a time.

Since I have this HP 6305 SFF I started to pay attention to this thing and now I see them everywhere. I have not seen a MT yet in an office library etc. somewhere. I understand that it can be done but dont really like the esthetics of PSU and GPU outside my black box Besides I have a 4 year old and you know how it is with children. And the most important is that it will look like old junk.  On the outside. Buhahahahahahahahaha.

[NonSequitur777]

@Michal212,

I completely understand -both with regard to little kids around and esthetics.  I changed over time towards functionality.

And I certainly agree saving money by buying used computer parts such as through eBay.  I never bought a new CPU or motherboard, for example.

Good luck and if you have any additional questions, I'll continue to do my darndest to provide you with the best possible information.

Kind Regards,

NonSequitur777