What CPUs etc can run on a 250W PSU in HTPC?

[simon12]

Am building a HTPC and the case comes with a 250W 1U PSU, there will be no dedicated graphics card as there is no room. The 250W PSU will need to power motherboard, CPU, RAM, Laptop DVDRW and a laptop HDD. With just these components can I use any CPU/board for sale or does it need to be under a certain TDP? Full PSU specs are:


1.4 INRUSH CURRENT
 
 60A/220V at 25℃ COLD START
 
 1.5 EFFICIENCY
 
 MIN 70% AT FULL LOAD 220Vac 50Hz
 
 
2.1 OUTPUT POWER
 
250W (MAX).
 
2.2
VOLTAGE
MAX LOAD Min Load Regulation Ripple Noise
 +5V 20A 1.0A +/- 5% 50mV 100mV
+12V 15A 0.2A +/- 5% 120mV 240mV
-12V 0.8A 0.1A +/- 10% 200mV 300mV
+3.3V 14A 0.2A +/- 5% 50mV 100mV

NOTE: 
 
1 The continuous max. DC output power shall not exceed 250W.And +5V、+3.3V total output power must not exceed 125W.
  
2 A 0.1uF ceramic disk capacitor & 10uF electrolytic (low ESR) capacitor should be put across the output terminals during ripple & noise measure. The oscillo-scope bandwidth set at 20MHz with co-axial probe.
 
3 Regulation load must within 30% to 70% of maximum load 
 
4 AMBIENT TEMPERATURE 25℃.
 
3.0 PROTECTION 
 
3.1 OVER LOAD PROTECTION 
 
3.1.1 120-160% of maximum power.  
 
3.2 SHORT CIRCUIT PROTECTION 
 
All output to ground. 
 
 
NOTE : After protection active all output will shut down .After shut down the power supply shall return to normal operation.only after the fault has been removed and the remote signal reset for a minimum 1 second (or the AC remove for 10 second). 
 
4.0 TIMING SEQUENCE 
4.1
TURN ON TIME 
900mS MAX 
4.2
P.G Delay time  
100~500mS 
4.3
P.F time
1mS MIN 
4.4
Hold up time.
15mS MIN. 
 
5.0 TEMPERATURE CHARACTORISTICS
 
5.1 OPERATION AMBIENT :
temperature
+10 to +40℃。
humidity
20~85%
  
6.1 HI-POT TEST
  
Vac =1500 Vac Current limit 10mA
  
6.2 GROUNDING TEST
 
R< 100mOhm
 
Condition 
 I=24Aac
 
6.3 Isolation test
 
R>2MOhm
 
Condition
400VDC

 

[geekapproved]

You can use any cpu/motherboard.

 

[simon12]

Cheers I thought so.

 

[geofelt]

It is the discrete graphics card that mostly determines the psu required. Since you have only integrated graphics, you can probably run on as little as 80w if you have a 32nm cpu.

There may be more to it than that. Psu quality counts, so it might be wise to see if you can find some reviews of the specific unit.
In general, included psu's from case vendors are not regarded as high on quality. Antec seems to be the exception.

 

[Uther39]

For a HTPC i would highly recommend AMDs latest APU...
AMD A8 3850, Lynx Core, Quad Core, S FM1, 2.9GHz, 4MB Cache, GPU 600MHz
http://www.scan.co.uk/products/amd-a8-3850-lynx-core-quad-core-s-fm1-29ghz-4mb-cache-gpu-600mhz-100w-retail

Asus F1A75-M, AMD A75, FM1, PCI-E 2.0 (x16), DDR3 1866, SATA 6Gb/s, RAID, mATX, On Board Graphics
http://www.scan.co.uk/products/asus-f1a75-m-amd-a75-fm1-pci-e-20-(x16)-ddr3-1866-sata-6gb-s-raid-matx-on-board-graphics

With this little set up you wont need a descreet GPU as its on chip and together with the CPU only uses 100w.

 

[simon12]

Thanks I was most likely going to get the 3850 but I need an ITX board for this case and this one seems to be the only one for sale in the UK http://www.ginger6.com/asrock-sktfm1-a75mitx-mitx-p-47667.html

 

[Uther39]

It appears you are correct, as I can find no other.