Topic: 4x 5850 Setup, Minimum PSU needed? - page 2. (Read 6732 times)
I run 4x5850@930MHz on a XFX 750W PSU (80+ bronze, draws 850W from the wall.). A friend of mine uses a 650W PSU to power his rig with 4x5850 in it. Doesn't need to be 1200W, that's just overkill IMO.
Can you do that 
thank you
Alot of hassle to sim,ply do that, you wouldnt believe. ABuse and all
My 850 Watt was cheap and nasty. Struggles with 2x 5850's being OC'd. Good enough for just 2 cards on there own so it shows hopw bad these psu's are There £60 worth a try i thought :/
I got a 900 Be quiet here i picked up for £100, I think that would be sound for 4 cards but i wouldnt use it as someone said above, running over 90% is bad news in most cases. 80% 1kw is 800W, i wouldnt use any less than 1KW SINGLE psu. I jerry rig mine and use muliple psu's though. its cheaper and spreads p[oer more evenly
thank you Alot of hassle to sim,ply do that, you wouldnt believe. ABuse and all
My 850 Watt was cheap and nasty. Struggles with 2x 5850's being OC'd. Good enough for just 2 cards on there own so it shows hopw bad these psu's are
There £60 worth a try i thought :/I got a 900 Be quiet here i picked up for £100, I think that would be sound for 4 cards but i wouldnt use it as someone said above, running over 90% is bad news in most cases. 80% 1kw is 800W, i wouldnt use any less than 1KW SINGLE psu. I jerry rig mine and use muliple psu's though. its cheaper and spreads p[oer more evenly
For now I am running 3 HD 5850 at 1000/350 with a voltage of 1.090V with a corsair 850W Gold
Do you think I can add another 5850 at 1000/350 and 1.090V??
Do you think I can add another 5850 at 1000/350 and 1.090V??
Yes, 1015/300 @ STOCK! (1.085 i believe, not 1.088 as trixx is ALWAYS a few volts UP! Also, fixed fdan needs to be selected on EVERY RELOAD for EVERY CARD! Bug. A new revision by shapphire xtreme. I posted a info thing but no one see's it in noob section
Revision is 230SA at the end of the P/N, Not 000SA like most are Not volt moddable yet though and ghot a generic answer from shapphire http://forum.bitcoin.org/index.php?topic=29860.msg375290#msg375290
1KW IS PLENTY, JUST MAKE SURE ITS DECENT!!!! END OF
no no I am running another Overclocking tool.
I am to 1.090V (I overvolted myself I have BSOD at 1.088 or less)
You are telling me that a 1000W PSU is good but did my 850W gold corsair is enough for my 4 cards?
ps : I will post your thred in the hardware section like this everybody would be able to see it
I recommend 1000-1200W, because:
it's enough to work with it =/= energy-efficiency
Most PSUs are @ 50% load the most efficient!
it's enough to work with it =/= energy-efficiency
Most PSUs are @ 50% load the most efficient!
For now I am running 3 HD 5850 at 1000/350 with a voltage of 1.090V with a corsair 850W Gold
Do you think I can add another 5850 at 1000/350 and 1.090V??
Do you think I can add another 5850 at 1000/350 and 1.090V??
Yes, 1015/300 @ STOCK! (1.085 i believe, not 1.088 as trixx is ALWAYS a few volts UP! Also, fixed fdan needs to be selected on EVERY RELOAD for EVERY CARD! Bug. A new revision by shapphire xtreme. I posted a info thing but no one see's it in noob section
Revision is 230SA at the end of the P/N, Not 000SA like most are Not volt moddable yet though and ghot a generic answer from shapphire http://forum.bitcoin.org/index.php?topic=29860.msg375290#msg375290
1KW IS PLENTY, JUST MAKE SURE ITS DECENT!!!! END OF
my rig with 4x5830 sapphires with clocks 1000/300 have power consumption = 786 W
That seems high. My 4x5830 Sapphires with clocks at 998/300 are 640W-650W at the wall with a Kill-A-Watt meter.
Cheers,
Kermee
For now I am running 3 HD 5850 at 1000/350 with a voltage of 1.090V with a corsair 850W Gold
Do you think I can add another 5850 at 1000/350 and 1.090V??
Do you think I can add another 5850 at 1000/350 and 1.090V??
Could someone please tell me how to overclock my 5850's past the 775 core that is max setting in CCC
Manythanks
Manythanks
Use a third-party tool, e.g. Sapphire has Trixx if you're using one of their cards.
I'm sure i've read that the 5850's are the most power efficient in the 58XX group, would you know how much extra power your 5870 takes over the 5850's?
A bit more, I have both and recorded down my power consumption at different clocks. But the data's at home so I'll try to remember to share it later if you're interested. I did remember thinking, my rig would be more efficient if my 5870 was a 5850. But then I probably won't have as much performance for my games
Quote
I forgot to mention one thing, i'm currently overclocking the core of each card to 840MHz and underclocking the memory to 150MHz (I know everyone says 300 is great, but i don't seem to be able to overclock the core any higher under any memory setting without a bsod, and there's no difference in hash rate between 300 and 150, but the temp goes down alot).
I don't know if downclocking the memory will make much of a difference at all, would anyone else know?
I don't know if downclocking the memory will make much of a difference at all, would anyone else know?
Quite a few watts, I was surprised to see a significant (>10W can't be sure, again data's at home) difference dropping from 1200Mhz to 300Mhz on my 5870. Not sure if it would make that big a diff by going from 300Mhz to 150Mhz though.
maybe that difference comes from method used to count energy
i was using standard electric bill meter
http://www.airbornegamer.com/wp-content/uploads/2010/04/electric-bill-meter.jpg
but i know for sure that it must be accurate, its the electric company hardware
my rig contains those parts:
MSI 790FX-GD70
SAPPHIRE HD5850 Xtreme
AMD Sempron 140 AM3 BOX
Goodram DDR3 1024MB 1333MHz CL9.0
2 x Fortron FSP650-80EGN
80 GB hdd
i was using standard electric bill meter
http://www.airbornegamer.com/wp-content/uploads/2010/04/electric-bill-meter.jpg
but i know for sure that it must be accurate, its the electric company hardware
my rig contains those parts:
MSI 790FX-GD70
SAPPHIRE HD5850 Xtreme
AMD Sempron 140 AM3 BOX
Goodram DDR3 1024MB 1333MHz CL9.0
2 x Fortron FSP650-80EGN
80 GB hdd
my rig with 4x5830 sapphires with clocks 1000/300 have power consumption = 786 W
That seems high. My 4x5830 Sapphires with clocks at 998/300 are 640W-650W at the wall with a Kill-A-Watt meter.
Cheers,
Kermee
I suggest you to buy a power metre, which can be found in most computer shops (or shopfront of electricity company), cheap and accurate, and you can avoid wasting tons of money on expensive PSU.
Could someone please tell me how to overclock my 5850's past the 775 core that is max setting in CCC
Manythanks
Manythanks
i have 3x5850 and 1x5870 running on a corsair 800w psu
all overclocked with default voltages
hey i have almost the same exact setup. running 3x 5850 and 1x 5870 all overclocked, one 5850 overvolted, using a OCZ 850w gold efficiency. it draws about 750w from the wall. all overclocked with default voltages
i would stick to an 1250 if u overclocked some cards
my rig with 4x5830 sapphires with clocks 1000/300 have power consumption = 786 W
other with 4x5850 OC = 640 W
this is power consumption "from wall"
other with 4x5850 OC = 640 W
this is power consumption "from wall"
What are you overlocking the 5850's to? It seems i should be able to get my 4th card working in this rig if i get a similar power usage to you
Code:
Adapter 0 - ATI Radeon HD 5800 Series
Core (MHz) Memory (MHz)
Current Clocks : 915 360
Current Peak : 915 360
Configurable Peak Range : [550-1200] [200-1400]
GPU load : 99%
Adapter 1 - ATI Radeon HD 5800 Series
Core (MHz) Memory (MHz)
Current Clocks : 940 360
Current Peak : 940 360
Configurable Peak Range : [550-1200] [200-1400]
GPU load : 99%
Adapter 2 - ATI Radeon HD 5800 Series
Core (MHz) Memory (MHz)
Current Clocks : 900 360
Current Peak : 900 360
Configurable Peak Range : [550-1200] [200-1400]
GPU load : 99%
Adapter 3 - ATI Radeon HD 5800 Series
Core (MHz) Memory (MHz)
Current Clocks : 955 360
Current Peak : 955 360
Configurable Peak Range : [550-1200] [200-1400]
GPU load : 99%
Core (MHz) Memory (MHz)
Current Clocks : 915 360
Current Peak : 915 360
Configurable Peak Range : [550-1200] [200-1400]
GPU load : 99%
Adapter 1 - ATI Radeon HD 5800 Series
Core (MHz) Memory (MHz)
Current Clocks : 940 360
Current Peak : 940 360
Configurable Peak Range : [550-1200] [200-1400]
GPU load : 99%
Adapter 2 - ATI Radeon HD 5800 Series
Core (MHz) Memory (MHz)
Current Clocks : 900 360
Current Peak : 900 360
Configurable Peak Range : [550-1200] [200-1400]
GPU load : 99%
Adapter 3 - ATI Radeon HD 5800 Series
Core (MHz) Memory (MHz)
Current Clocks : 955 360
Current Peak : 955 360
Configurable Peak Range : [550-1200] [200-1400]
GPU load : 99%
im powering them with 2x fortron fsp650-80egn per rig
Not only the load, but the energy-efficiency are also important!
If you want a Corsair, buy one "Professional Series Gold" series, but I would also recommend Cooler Master's Silent Pro Gold series...
I would recommended 1000-1200W for higher efficiency.
Edit: They have the best feature for mutly-GPU:
If you want a Corsair, buy one "Professional Series Gold" series, but I would also recommend Cooler Master's Silent Pro Gold series...
I would recommended 1000-1200W for higher efficiency.
Edit: They have the best feature for mutly-GPU:
Quote
Single 12 V Power Rail
Tackling challenges from the most power-intensive peripherals head on, this solitary 12 V power rail provides ample power and strong resistance to any overloading.
Tackling challenges from the most power-intensive peripherals head on, this solitary 12 V power rail provides ample power and strong resistance to any overloading.
1000 is probably a good idea, need to keep it below 80% load or so, to maintain peak power efficiency...
i have 3x5850 and 1x5870 running on a corsair 800w psu
all overclocked with default voltages
I'm sure i've read that the 5850's are the most power efficient in the 58XX group, would you know how much extra power your 5870 takes over the 5850'sall overclocked with default voltages
the 5870 is the most efficient one
I fried a 850 bogo psu with 3 cards. Didnt even do 2
Wow so your 850w psu wouldn't cover 3 cards? Which cards were you trying it with?
I've just got a power reading for my rig, it's using 540-560w at the moment, that's the 3 5850's (840 core, 150 mem) a phenom 2 x4 and 8gb ram...
I've heard that 5850's can run at 150w, if so then i might be able to get away with sticking that in my machine right?
I can try downclocking the processor to see if that frees up any space.
the 850 was a cheap nasty one for 60 quid. give.it a go
fried in 2 mins ha ha. now I use xfx 750 and a basic 650. what was to hand as i said, a decent kilowatt one will be more than enough
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