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What size power supply for an A8-3870?

post #1 of 9
Thread Starter 
I'm planning on building a multi-purpose office machine that uses an A8-3870 APU sometime later this year.

Is a 300W PSU enough?

It will be a small case with 4 fans, stock cooling, mATX mobo, 1 SSD, no HDD, no discrete graphics, no optical drive.
post #2 of 9
Yes, it should be.
Synergy
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Synergy
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Mobile machine
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CPUMotherboardGraphicsRAM
Phenom II X4 955 Black Edition @ 4.3Ghz Asus M5A99X Evo Crossfire XFX 6870's Corsair Vengeance 16GB 1333Mhz 
Hard DriveHard DriveHard DriveOptical Drive
Western Digital caviar blue 1TB 7200RPM Western Digital caviar blue 320GB 7200RPM OCZ Solid series SSD 60GB 6Gb/s Some Sony DVD/CD drive 
CoolingOSOSMonitor
XSPC Rasa 750 RS360 liquid-cooling Windows 7 Ultimate x64 Ubuntu 11.4 Viewsonic 27" 1920x1080 
MonitorKeyboardPowerCase
HP 18.5" 1440x900 Logitech G510 Gaming keyboard CM modular silent pro 1000w Heavily modded Cooler Master HAF 922 
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Microsoft Intellipoint ergonomic W.O. mouse my desk Coby 5.1 surround 
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Hitachi 500GB 5400RPM HDD General use DVD/CD drive integrated laptop heatsink Windows 7 Home Premium 
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post #3 of 9
Not even a 300 watt psu is needed..... what the smallest psu you can get?
MCC
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MCC
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post #4 of 9
Quote:
Originally Posted by mcc21 View Post
Not even a 300 watt psu is needed..... what the smallest psu you can get?
120w I believe. Only from online sites like amazon and ebay I think.
Synergy
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Phenom II X4 955 Black Edition @ 4.3Ghz Asus M5A99X Evo Crossfire XFX 6870's Corsair Vengeance 16GB 1333Mhz 
Hard DriveHard DriveHard DriveOptical Drive
Western Digital caviar blue 1TB 7200RPM Western Digital caviar blue 320GB 7200RPM OCZ Solid series SSD 60GB 6Gb/s Some Sony DVD/CD drive 
CoolingOSOSMonitor
XSPC Rasa 750 RS360 liquid-cooling Windows 7 Ultimate x64 Ubuntu 11.4 Viewsonic 27" 1920x1080 
MonitorKeyboardPowerCase
HP 18.5" 1440x900 Logitech G510 Gaming keyboard CM modular silent pro 1000w Heavily modded Cooler Master HAF 922 
MouseMouse PadAudio
Microsoft Intellipoint ergonomic W.O. mouse my desk Coby 5.1 surround 
CPUMotherboardGraphicsRAM
Intel i5 M480 @ 2.67Ghz Stock Lenovo mobo Integrated Intel HD graphics 4GB 1333Mhz 
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Hitachi 500GB 5400RPM HDD General use DVD/CD drive integrated laptop heatsink Windows 7 Home Premium 
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15.6 Inch monitor 
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Synergy
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Hard DriveHard DriveHard DriveOptical Drive
Western Digital caviar blue 1TB 7200RPM Western Digital caviar blue 320GB 7200RPM OCZ Solid series SSD 60GB 6Gb/s Some Sony DVD/CD drive 
CoolingOSOSMonitor
XSPC Rasa 750 RS360 liquid-cooling Windows 7 Ultimate x64 Ubuntu 11.4 Viewsonic 27" 1920x1080 
MonitorKeyboardPowerCase
HP 18.5" 1440x900 Logitech G510 Gaming keyboard CM modular silent pro 1000w Heavily modded Cooler Master HAF 922 
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Microsoft Intellipoint ergonomic W.O. mouse my desk Coby 5.1 surround 
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Intel i5 M480 @ 2.67Ghz Stock Lenovo mobo Integrated Intel HD graphics 4GB 1333Mhz 
Hard DriveOptical DriveCoolingOS
Hitachi 500GB 5400RPM HDD General use DVD/CD drive integrated laptop heatsink Windows 7 Home Premium 
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15.6 Inch monitor 
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post #5 of 9
Moved to power supplies

It is likely you won't need any more than a 250W. The CPU & GPU performance for the power usage is excellent on APUs.
post #6 of 9
SSD's take next to nothing in terms of power. The A8-3870 APU is pretty much going to be an A8-3850 APU with an unlocked multiplier. It will probably be the same 100 Watt TDP as well.

All said and done, you might will be able to get away with a great 200-250 watt PSU.
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post #7 of 9
that would be more than enough,
apu 100 watts maxed out(yeah right)
mb 50 watts max(never happen)
mem 50 watts max(never)
three fans(depending on size and wattage 5-8 watts piece) 20 watts max
the ssd 10-15 watts?
245 watts total with system running maxed out which almost never really happens
Edited by JUGGERNAUTXTR - 8/12/11 at 6:15pm
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My System
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post #8 of 9
Thread Starter 
Thank you all for the advice.

I'll likely use this PSU unless something better becomes available in late September.
post #9 of 9
Quote:
Originally Posted by willis888 View Post
Thank you all for the advice.

I'll likely use this PSU unless something better becomes available in late September.
This is a more powerful version of the same thing:
http://www.newegg.com/Product/Produc...=neoeco%20400c

It's cheaper after you take into account the SS-300ET's shipping cost.
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