I need a small PSU

[mrnarwhal]

I have a small case and need a 400w or more PSU thats no bigger than 7.5 in x 3 in x 3.75 in. I can't find one online. I'm assuming I need mini itx, micro atx, or flex atx. Anyone have any leads? Thanks.

 

[ko888]

Is it a TFX form factor PSU?

TFX
• Standard dimension for this form factor is:
85mm (W) x 65mm (H) x 175mm (D)
3.35in (W) x 2.56in (H) x 6.89in (D)
• There are models with varying depth, but usually shorter than 175mm

What's the full system specifications?

 

[mrnarwhal]

Is it a TFX form factor PSU?

TFX
• Standard dimension for this form factor is:
85mm (W) x 65mm (H) x 175mm (D)
3.35in (W) x 2.56in (H) x 6.89in (D)
• There are models with varying depth, but usually shorter than 175mm

What's the full system specifications?

I have an intel i5-2400, lenovo is6xm motherboard, 16 gigs of ddr3 ram (I know its overkill but I had it so), . I'm currently running the integrated graphics, but I'm looking to upgrade, hence the need for a 400w PSU. Currently for PSU I have a fsp group inc model fsp240-50 sbv. I'm working off an old Lenovo M91P I got for really cheap from an auction (and mainly got just for the CPU).

I'm concerned about that width. Here's a picture of what it is on mine

 

[ko888]

Which graphics card model are you thinking of upgrading to?

The FSP240-50SBV is definitely a TFX form factor PSU.

 

[mrnarwhal]

Which graphics card model are you thinking of upgrading to?

The FSP240-50SBV is definitely a TFX form factor PSU.

I was thinking about a GT 740 or GTX 750 TI depending on how much the new PSU costs, or just how much money I generally have.
Do you think any TFX would be fine? And if so, is there a 400 watt one?

 

[ko888]

System Power Supply Requirements for a single GeForce GTX 750 Ti
• NVIDIA specifies a minimum of a 300 Watt or greater system power supply. (Minimum system power requirement based on a PC configured with an Intel Core i7 3.2GHz 130 Watt TDP processor.)
• the system power supply must also have a maximum combined +12 Volt continuous current rating of 20 Amps or greater
• the system power supply should also have at least one 75-Watt 6-pin PCI Express supplementary power connector for some of the non-reference design cards (e.g. ASUS GTX 750 Ti OC 2 GB [GTX750TI-OC-2GD5], EVGA GeForce GTX 750 Ti FTW w/ EVGA ACX Cooling [02G-P4-3757-KR]).

Total Power Supply Wattage is NOT the crucial factor in power supply selection!!! Sufficient Total Combined Continuous Power/Current Available on the +12V Rail(s) is the most critical factor.

FSP GROUP INC. 240W (FSP240-50SBV)
• OEM: FSP
• maximum combined +12 Volt continuous current rating: 17 Amps <===== Sufficient depending upon age of the PSU
• No PCI Express supplementary power connectors
• Modular Output Cables: No
• Official Intel Haswell Compliance: No
• No 80 PLUS Efficiency Certification

If you want to replace the PSU get this one: http://www.newegg.com/Product/Product.aspx?Item=N82E16817151114

 

[mrnarwhal]

System Power Supply Requirements for a single GeForce GTX 750 Ti
• NVIDIA specifies a minimum of a 300 Watt or greater system power supply. (Minimum system power requirement based on a PC configured with an Intel Core i7 3.2GHz 130 Watt TDP processor.)
• the system power supply must also have a maximum combined +12 Volt continuous current rating of 20 Amps or greater
• the system power supply should also have at least one 75-Watt 6-pin PCI Express supplementary power connector for some of the non-reference design cards (e.g. ASUS GTX 750 Ti OC 2 GB [GTX750TI-OC-2GD5], EVGA GeForce GTX 750 Ti FTW w/ EVGA ACX Cooling [02G-P4-3757-KR]).

Total Power Supply Wattage is NOT the crucial factor in power supply selection!!! Sufficient Total Combined Continuous Power/Current Available on the +12V Rail(s) is the most critical factor.

FSP GROUP INC. 240W (FSP240-50SBV)
• OEM: FSP
• maximum combined +12 Volt continuous current rating: 17 Amps <===== Sufficient depending upon age of the PSU
• No PCI Express supplementary power connectors
• Modular Output Cables: No
• Official Intel Haswell Compliance: No
• No 80 PLUS Efficiency Certification

If you want to replace the PSU get this one: http://www.newegg.com/Product/Product.aspx?Item=N82E16817151114

I wanted this GPU http://www.newegg.com/Product/Product.aspx?Item=N82E16814127836&cm_re=gtx_750_ti-_-14-127-836-_-Product
It says I need a 400 watt power supply. Would any of these fit my space?
http://www.newegg.com/Product/Product.aspx?Item=9SIA7252X26472&cm_re=400w_tfx_power_supply-_-9SIA7252X26472-_-Product
http://pointtek.ecrater.com/p/11544816/hp-pavilion-slimline-s5660f-power
http://www.outletpc.com/wr4972-replace-power-rp-tfx-420-tfx-12v-420w-psu.html
http://www.ebay.com/itm/Replace-Power-Supply-TFX-SFF-420W-watt-Upgrade-for-250W-300W-320W-350W-400W-/281281781299

 

[ko888]

Read through this post:

http://www.tomshardware.com/answers/id-2061335/300w-18a-run-gtx-750.html

 

[ko888]

No need for a 400W PSU. Look at NVIDIA's own specifications for the GeForce GTX 750 Ti here:

http://www.geforce.com/hardware/desktop-gpus/geforce-gtx-750-ti/specifications

It clearly states:

Minimum System Power Requirement (W) 300W.

 

[ko888]

I wanted this GPU http://www.newegg.com/Product/Product.aspx?Item=N82E16814127836&cm_re=gtx_750_ti-_-14-127-836-_-Product
It says I need a 400 watt power supply. Would any of these fit my space?
http://www.newegg.com/Product/Product.aspx?Item=9SIA7252X26472&cm_re=400w_tfx_power_supply-_-9SIA7252X26472-_-Product
http://pointtek.ecrater.com/p/11544816/hp-pavilion-slimline-s5660f-power
http://www.outletpc.com/wr4972-replace-power-rp-tfx-420-tfx-12v-420w-psu.html
http://www.ebay.com/itm/Replace-Power-Supply-TFX-SFF-420W-watt-Upgrade-for-250W-300W-320W-350W-400W-/281281781299

That graphics card is fine.

All of those TFX PSUs, that you've linked to, are generic garbage. They only have a maximum combined +12 Volt continuous current rating of 14 Amps. They won't work. That's way worse than your current FSP240-50SBV. Don't be duped by a liar Wattage value.

You should be asking yourself why a 400W PSU's +12V rail is much weaker than your current 240W PSU.

This SeaSonic SS-300TFX Bronze has a maximum combined +12 Volt continuous current rating of 21 Amps and is way more than enough for your system configuration:
http://www.newegg.com/Product/Product.aspx?Item=N82E16817151090

 

[ko888]

How do you get 420W from a 281W PSU? Slap a liar label on it.

From REPLACE POWER's own web page: http://replacepower.com/power-supply-types/tfx-power-supply/rp-tfx-420-watt/

 

[mrnarwhal]

I wanted this GPU http://www.newegg.com/Product/Product.aspx?Item=N82E16814127836&cm_re=gtx_750_ti-_-14-127-836-_-Product
It says I need a 400 watt power supply. Would any of these fit my space?
http://www.newegg.com/Product/Product.aspx?Item=9SIA7252X26472&cm_re=400w_tfx_power_supply-_-9SIA7252X26472-_-Product
http://pointtek.ecrater.com/p/11544816/hp-pavilion-slimline-s5660f-power
http://www.outletpc.com/wr4972-replace-power-rp-tfx-420-tfx-12v-420w-psu.html
http://www.ebay.com/itm/Replace-Power-Supply-TFX-SFF-420W-watt-Upgrade-for-250W-300W-320W-350W-400W-/281281781299

That graphics card is fine.

All of those TFX PSUs, that you've linked to, are generic garbage. They only have a maximum combined +12 Volt continuous current rating of 14 Amps. They won't work. That's way worse than your current FSP240-50SBV. Don't be duped by a liar Wattage value.

You should be asking yourself why a 400W PSU's +12V rail is much weaker than your current 240W PSU.

This SeaSonic SS-300TFX Bronze has a maximum combined +12 Volt continuous current rating of 21 Amps and is way more than enough for your system configuration:
http://www.newegg.com/Product/Product.aspx?Item=N82E16817151090

awesome thanks