TOO MUCH LOAD on Power Supply? BOOM...FIRE????

[ibrahim11]

Hi, my mining rig is:

AMD SEMPRON 145
COOLERMASTER HYPER 212 EVO
SANDISK 128GB SSD
SAPPHIRE 7950 and MSI 280x (using 2 powered pci riser cables)
ASROCK EXTREME4 970 - MOTHERBOARD
2x 2GB G.Skill 1333mHz Ram
CORSAIR RM750 FULLY MODULAR GOLD 80+ Power Supply.

Some people say this is enough power for my rig. Is it enough though- because some psu calculators say I need more? How much will my rig consume? At the moment I am waiting for my mobo to come so I can put it together

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[1715646077]

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[vpasic]

you will be just fine!
your PSU have more than enough power to power up your rig.

[ibrahim11]

you will be just fine!
your PSU have more than enough power to power up your rig.

How many cards could i use on this?

[vpasic]

undervolt both card and you will be fine.
you'll need another psu to power up more gpu-s.

[ibrahim11]

undervolt both card and you will be fine.
you'll need another psu to power up more gpu-s.

but without undervolting i am still fine?

[vpasic]

Yup.

[vm1990]

Yup.

i agree just dont try overclocking. at stock your left with about 100w maybe a bit more so your in a safe working zone but very very limited to what else you can do. no overclocking and you cant add anything else

[ibrahim11]

Yup.

i agree just dont try overclocking. at stock your left with about 100w maybe a bit more so your in a safe working zone but very very limited to what else you can do. no overclocking and you cant add anything else

Ok, but on my cgminer for gpu engine - won't that overclock the card?

my settings are:
280x:
setx GPU_MAX_ALLOC_PERCENT 100
setx GPU_USE_SYNC_OBJECTS 1
cgminer --scrypt -o host:port -u x -p x -I 13 --lookup-gap 2 --g 2 --thread-concurrency 8192 --gpu-engine 1020 --gpu-memclock 1500 --gpu-powertune 0 --temp-target 70 --temp-overheat 80 --temp-cutoff 87 --auto-fan --d=[pci slot/device number]

7950:
setx GPU_MAX_ALLOC_PERCENT 100
setx GPU_USE_SYNC_OBJECTS 1
cgminer --scrypt -o host:port -u x -p x -I 19 --g 1 --thread-concurrency 24000 --gpu-engine 900 --gpu-memclock 900 --gpu-powertune 20 --temp-target 70 --temp-overheat 80 --temp-cutoff 88 --gpu-fan 80 --auto-fan --d=[pci slot/device number]

Is this fine - I mean is it fine that my psu will be alright?

[vm1990]

Yup.

i agree just dont try overclocking. at stock your left with about 100w maybe a bit more so your in a safe working zone but very very limited to what else you can do. no overclocking and you cant add anything else

Ok, but on my cgminer for gpu engine - won't that overclock the card?

my settings are:
280x:
setx GPU_MAX_ALLOC_PERCENT 100
setx GPU_USE_SYNC_OBJECTS 1
cgminer --scrypt -o host:port -u x -p x -I 13 --lookup-gap 2 --g 2 --thread-concurrency 8192 --gpu-engine 1020 --gpu-memclock 1500 --gpu-powertune 0 --temp-target 70 --temp-overheat 80 --temp-cutoff 87 --auto-fan --d=[pci slot/device number]

7950:
setx GPU_MAX_ALLOC_PERCENT 100
setx GPU_USE_SYNC_OBJECTS 1
cgminer --scrypt -o host:port -u x -p x -I 19 --g 1 --thread-concurrency 24000 --gpu-engine 900 --gpu-memclock 900 --gpu-powertune 20 --temp-target 70 --temp-overheat 80 --temp-cutoff 88 --gpu-fan 80 --auto-fan --d=[pci slot/device number]

Is this fine - I mean is it fine that my psu will be alright?

it depends what you gpu engines are set to by the manufacturers, if there set lower then change the gpu engine speed to match it.