HP ProDesk 400 G1 Small Form Factor PC CPU upgrade Is a better power supply required?

[Foxy_011]

Hey all 

ok so I’ve just got my hands on one of these machines for free and was looking at upgrading the CPU to a Intel Core i7-4771 I’ve already got 16gb of ram and the rest is standard(I think) and I was wondering if the standard power supply would be able to support it I thought so but I’m unsure to be honest any help would be appreciated 

[Paul_Tikkanen]

Hi:

According to the quickspecs for that model, the i7-4771 is not supported.

http://i.sears.com/s/d/pdf/mp-tc/spinpdf/spin_prod_ec_1468365102

The best you can go to is the i7-4770 according to page 4, and no additional equipment is necessary for the upgrade.

[Foxy_011]

Hi

on page 142 of the Maintenance and service guide for the machine it offers the 4771 as an upgrade-able  option for the ProDesk 400 g1 sff so is this a HP problem where the supported CPU options are not consistent?  and if it turns put that the 4471 is supported will a better power supply be required.

[Paul_Tikkanen · Accepted solution]

Hi:

Below is the link to the specs for both processors.

Since they both draw 84 W, they could use the same P/S as you have in there now.

https://ark.intel.com/content/www/us/en/ark/compare.html?productIds=75122,77656

I would go with the 4771, since the service manual's revision is a month newer than the quickspecs link I posted.

Also the power supplies are proprietary and unless HP has a better one for the 400 G1 SFF, than you have now, you wouldn't be able to upgrade the P/S anyway.