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funkysourav

funkysourav

What The.... !!!
came across this thread on Erodov,
Guy with HIS R9 280X(2x8pin) and Seasonic S12II 520 with 40amps on the +12V says the Computer won't boot up
so he gets Corsair GS 600 with 48 amps on 12V and the computer now boots up fine.

how is this possible?
All the reviews "Guru3d / Tomshardware" with exception of "TechPowerup" show the power consumption to be 240/245 watt which is 21 Amp for the card, and if i take into account the processor 90w (8 amp) it comes to a maximum 29 amp which is well within what the Seasonic S12ii 520 is rated to provide(40amps rated).
even this thread from MSI says it requires 30 amps for any normal system.
so what happened here?
 
Last edited:
skeletor

skeletor

Chosen of the Omnissiah
^ yes, that is odd. I'm using HD 6950 on a Corsair CX430v2. Full Load on the GPU 24 hours a day, it works fine.
 
rijinpk1

rijinpk1

Aspiring Novelist
funkysourav said:
came across this thread on Erodov,
Guy with Seasonic S12II 520 with 40amps on the +12V says the Computer won't boot up
so he gets Corsair GS 600 with 48 amps on 12V and the computer now boots up fine.

how is this possible?
All the reviews "Guru3d / Tomshardware" with exception of "TechPowerup" show the power consumption to be 240/245 watt which is 21 Amp for the card, and if i take into account the processor 90w (8 amp) it comes to a maximum 29 amp which is well within what the Seasonic S12ii 520 is rated to provide(40amps rated).
even this thread from MSI says it requires 30 amps for any normal system.
so what happened here?
Click to expand...

probably a problem with the psu.
 
topgear

topgear

Super Moderator
Staff member
ico said:
^ yes, that is odd. I'm using HD 6950 on a Corsair CX430v2. Full Load on the GPU 24 hours a day, it works fine.
Click to expand...

Hmm .. That's look like a solid PSU ? Mind telling what you are doing 24 hours a day with the GPU ? :D

BTW, Time for some news :

Meet DopaMine, the 6-GPU case designed for Bitcoin miners and PC enthusiasts | PCWorld

Chinese New Year, Litecoin to Blame for AMD GPU Shortage, Price Hikes | Digital Trends
 
funkysourav

funkysourav

What The.... !!!
I forgot to mention that the card is an HIS R9 280x Dual X and comes with 2x8 pin connector slots
which makes his power consumption anything between 175-275 watts


estimation based on following
PCIe slot from mobo 75W
8 pin connectors 100W
6 pin Connectors 75W

so GPU can take anything between 175-275w at full load, reviews say its 240w though.
i5 3770 takes 80watts non overclocked
that makes a maximum of 355 watts on 12V rail, i.e 30amps(on load) to 33amps(headroom) give or take.

so why does he need 45-48 amps then?
even if he were to overclock the CPU, 12V load wouldn't have crossed 36 amps.

maybe his PSU was faulty? its not that Seasonic S12II 520 is infallible you know.
or maybe his operating temps crossed 50C(unlikely at february) and his PSU throttled its max load by 100-120 watts?
seasonic S12II520 capacitors are rated for 40C and do throttle their load at any higher temps.


p.s.
@ico CX430V2 is completely different than CX430
its a great PSU from what I read on Hardwaresecrets where its awarded Gold.
and its 500W PSU
my VX450 is gold too and is 550w. ;)
 
Last edited:
tkin

tkin

Back to school!!
kartikoli said:
Exactly what tkin suggest also you can have Zotak for 5yrs warranty
A member was negotiating for my gtx 770 amp and he said that MSI is selling gtx770 @24k which i doubt so if its true then you can go for it
Click to expand...
Where where? Last I saw 770 was selling for 28k+, and the price I get locally thorough contacts is the best one.

- - - Updated - - -

funkysourav said:
came across this thread on Erodov,
Guy with HIS R9 280X(2x8pin) and Seasonic S12II 520 with 40amps on the +12V says the Computer won't boot up
so he gets Corsair GS 600 with 48 amps on 12V and the computer now boots up fine.

how is this possible?
All the reviews "Guru3d / Tomshardware" with exception of "TechPowerup" show the power consumption to be 240/245 watt which is 21 Amp for the card, and if i take into account the processor 90w (8 amp) it comes to a maximum 29 amp which is well within what the Seasonic S12ii 520 is rated to provide(40amps rated).
even this thread from MSI says it requires 30 amps for any normal system.
so what happened here?
Click to expand...
Its all a lie, R9 280x is fine with 6+8 pin, adding the extra 8pin doesn't make a lot of difference, you'll hit OC wall even before consuming full power, GPU power estimate made by those websites is always overkill, a 600w PSU from any good vendor will run anything, incl GTX Titan.
 
kartikoli

kartikoli

Busy!!
tkin said:
Where where? Last I saw 770 was selling for 28k+, and the price I get locally thorough contacts is the best one.
Click to expand...
I think he lies to me to lowball for a 5 month old 770 amp (Invoiced @36k)
(offered me 18k shipped ... lol)

I was sure that we wont see 770 OC at that price
 
funkysourav

funkysourav

What The.... !!!
tkin said:
Where where? Last I saw 770 was selling for 28k+, and the price I get locally thorough contacts is the best one.

- - - Updated - - -


Its all a lie, R9 280x is fine with 6+8 pin, adding the extra 8pin doesn't make a lot of difference, you'll hit OC wall even before consuming full power, GPU power estimate made by those websites is always overkill, a 600w PSU from any good vendor will run anything, incl GTX Titan.
Click to expand...
But the question still remains why his PC failed to boot with the S12II520 powering the r9 280x?
 
V

vkl

Cyborg Agent
Seasonic s12ii 520w has one 6-pin PCIe and one 6+2 pin PCIe connector plugs,that HIS model requires two 8-pin PCIe plugs.
A 6-pin PCIe connector has one sense signal(sense0),8-pin one has two sense signals(sense0 and sense1).Through this sense pins GPU can know which type of connector it is connected to.
6-pin connector plug is compatible with 8-pin GPU socket but it is upto the vendor's(HIS in this case) design whether it allows it to work in that mode or not power up.A 6-pin to 8-pin PCIe adapter like StarTech PCIEX68ADAP 6" PCI Express 6 pin to 8 pin Power Adapter Cable F-M - Newegg.com should have worked here.
 
funkysourav

funkysourav

What The.... !!!
vkl said:
Seasonic s12ii 520w has one 6-pin PCIe and one 6+2 pin PCIe connector plugs,that HIS model requires two 8-pin PCIe plugs.
A 6-pin PCIe connector has one sense signal(sense0),8-pin one has two sense signals(sense0 and sense1).Through this sense pins GPU can know which type of connector it is connected to.
6-pin connector plug is compatible with 8-pin GPU socket but it is upto the vendor's(HIS in this case) design whether it allows it to work in that mode or not power up.A 6-pin to 8-pin PCIe adapter like StarTech PCIEX68ADAP 6" PCI Express 6 pin to 8 pin Power Adapter Cable F-M - Newegg.com should have worked here.
Click to expand...
I doubt that the user tried to connect it by 6 pins, he must've had an adapter or something.
gonna ask him and then confirm.
 
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