5870 and my PSU

D

DITC

Limp Gawd
Joined
Mar 27, 2006
Messages
394
From a review of 5870:

"The card requires you to have a 500 Watt power supply unit at minimum if you use it in a high-end system. That power supply needs to have (in total accumulated) at least 40 Amps available on the +12 volts rails."

This is my PSU:

+3.3V : 24 A
+5V : 25 A
+12V(1) : 20 A
+12V(2) : 20 A
+12V(3) : 20 A
+12V(4) : 20 A
-12V : 0.5 A
+5Vsb : 3 A

The 5870 have two 6pin connectors right, does this mean I connect one connector to say the 12v1 and another to 12v2 then? To get 40 amps or

or do I need a new PSU
 
So far, the info you've provided doesn't tell us anything.

Please tell us what's the make and model of your PSU.
 
odex said:
I don't think you know it

it's norwegian

http://www.netshop.no/aspx/produkt/prdinfovnet.aspx?plid=54560
Click to expand...

Hmm, that link doesn't provide any more info actually.

Ok, can you provide us a picture of the PSU label? The PSU label tells us who actually made the PSU and what's the total amperage on the +12V rail.

Just a FYI:
You determine the amperage on the +12V rails by first finding out what's the total combined, max load, combined or max wattage set aside for the +12V rails/section alone. Then divide that total by 12 and you get how much amps the PSU has on the +12V rail.

That's the correct way to find out how much amps a power supply has. Don't add up the amps on the +12V rail to figure out the amperage. Doesn't work that way. If the total combined or max wattage can't be found on the power supply, check the manufacturer's site page for that PSU for that info. If the manufacturer doesn't provide that information, it's generally a good sign for you to drop that power supply from consideration.
 
Thought I'd ask here.

I imagine the Corsair HX520 can handle the Radeon 5850.

Rest of the parts are pretty run of the mill:

2 WD HDDs (1TB WD Caviar Black, and an older 650GB WD), G SKILL Ripjaws 4GB DDR3 1600 (1.5v), Core i7 860 2.8GHz, Auzentech Forte, Gigabyte P55 UD4P, some DVD optical drive, 5 fans.
 
Slider19 said:
Thought I'd ask here.

I imagine the Corsair HX520 can handle the Radeon 5850.

Rest of the parts are pretty run of the mill:

2 WD HDDs (1TB WD Caviar Black, and an older 650GB WD), G SKILL Ripjaws 4GB DDR3 1600 (1.5v), Core i7 860 2.8GHz, Auzentech Forte, Gigabyte P55 UD4P, some DVD optical drive, 5 fans.
Click to expand...

The Corsair will be enough.
 
Danny Bui said:
Hmm, that link doesn't provide any more info actually
Click to expand...

Actually, ther is quite a bit of info on that site.. no hard to decifer for what is important...

I wish the USA online stores would list that much info about power supplies.. It even lists the location of the plugs on each power wire.

It is a 600w power supply with active PFC... It is probably a pretty decent power supply as junky ones usually don't have PFC of any kind.

It should be fine for the 5870. The 6-pin plugs should be on different rails so you should have plenty of amperage for the 5870.

"MIST, 600W, avtagbare kabler, Rev.3 5 års garanti


Link til test på Dinside.no
Denne PSUen har vunnet en rekke priser, den siste av dinside.no hvor den fikk annbefalt produkt.
dinside skriver:
"Enestående støysvak
Vi har ikke for vane å teste strømforsyninger på DinSide.no, men vi har kjørt minitester og omtaler av noen støysvake forsyninger tidligere. Det er først og fremst opplevelsene under tilkobling og bruk vi sier noe om, og her troner den nye Mist-forsyningen helt i toppen.
En rekke utenlandske og uavhengige testmagasiner har i tillegg kjørt mer inngående tester (også stresstester), og samtlige gir Mist gode skussmål.
Dette er rett og slett den klart mest støysvake strømforsyningen med vifte vi har opplevd.
MIST 600W versjon 3 har fått ny aktiv PFC krets og enda bedre virkningsgrad. PAPST viften er byttet ut med en vifte som har litt lavere max. turtall og som i tillegg har en lagertype med meget gode egenskaper ved lave turtall. Temperaturstyringen er forbedret, av/på bryteren er belyst (vises ikke på bilde) og gunstig dollarkurs har gitt rom for å sette ned prisen. Og, sist, den kanskje viktigste endringen - MIST IntelligentCabling System.
MIST Intelligent Cabling System gir deg en optimal lastfordeling og gjør at du kan "suge ut" selv den siste lille watten fra strømforsyningen. På baksiden av strømforsyningen er samtlige +12V linjer ført ut til sine respektive universalkontakter og alle universalkontaktene har i tillegg +3.3V og +5V.
Universalkontaktene er helt like og gir deg frihet til å belaste de viktige +12V linjene akkurat slik du ønsker. Dog, 20/24-pins og 4/8-pins er fastmonterte siden PSU ikke kan benyttes uten disse kablene. I henhold til ATX spesifikasjonen er de tilkoblet henholdsvis +12V1 og +12V2.
Følgende kabler er inkludert:
* 1 stk. drevkabel, SATA+SATA+SATA, 0-30-40-50 cm
* 1 stk. drevkabel, SATA+SATA+SATA, 0-45-55-65 cm
* 1 stk. drevkabel, B4pin+B4pin+S4pin, 0-45-55-65 cm
* 1 stk. drevkabel, B4pin+B4pin+B4pin, 0-30-40-50 cm
* 1 stk. drevkabel, B4pin+B4pin+B4pin, 0-45-55-65 cm
* 2 stk. PCI-e kabel, 6/8-pin, 0-45 cm
B4pin = store 4-pins kontakter. S4pin = små 4-pins kontakter. 0-30-40-50 betyr at det er 30cm til første kontakt, 40cm til andre kontakt etc.
Disse kablene gir brukeren rikelig med kontakter. Om dette mot formodning ikke skulle være nok så selger vi også samme type kabler (samt flere andre) i løs vekt.
Hardware produsentene introduserer stadig nye flere kontakter. Bruker du strømforsyning med MIST Intelligent Cabling System så kan fremtidige kabler og kontaker kjøpes fra oss.
MIST Intelligent Cabling System er både for nybegynneren og for den ekspertbrukeren. Nybegynneren kan bruke våre forslag til standard tilkobling. Ekspertbrukeren finner selv ut optimal lastfordeling.
Eksempel 1: Server PC. Skjermkort og CPU har moderat effektforbruk. Mange harddisker (15-20 stk). På en slik PC bør harddiskene belaste alle fire +12V linjene, eksempelvis 5-6 disker på +12V3 og 5-6 disker på +12V4, resten fordeles på +12V1 og +12V2.
Eksempel 2: Gaming PC. Effektkrevende skjermkort og CPU. På en slik PC tilkobles det ene skjermkortet +12V3 og det andre skjermkortet +12V4. Øvrige +12V forbrukere som harddisker og vifter fordeles etter ønske.
Spesifikasjoner

Egenskaper
Farge : Sort
Vekt : 2500 gram
Bredde : 150 mm
Høyde : 86 mm
Dybde : 140 mm
Formfaktor : ATX12V - 2.2
Forpakning : Retail

Annet
Temperaturstyrt : Ja
UV-reaktiv : Nei
Med lys : Nei

Tilkoblinger
ATX20/24 : 1 stk.
CPU8/2xP4 : 1 stk.
S-ATA : 6 stk.
PCI-e : 2 stk.
Drev : 8 stk.
Minidrev (floppy) : 2 stk.

Beskyttelse
Kortslutningsbeskyttelse : Ja
Overspenningsbeskyttelse : Ja
Overstrømsbeskyttelse : Ja
Overlastbeskyttelse : Ja

AC inn
Maks. strøm : 6 A
Frekvens : 50 - 60 Hz
Spenning : 115 - 230 V
Beskyttelse : Intern sikring

DC ut - Maks. strøm
+3.3V : 24 A
+5V : 25 A
+12V(1) : 20 A
+12V(2) : 20 A
+12V(3) : 20 A
+12V(4) : 20 A
-12V : 0.5 A
+5Vsb : 3 A

DC ut - Lastregulering
+3.3V : 5 ±%
+5V : 5 ±%
+12V(1) : 5 ±%
+12V(2) : 5 ±%
+12V(3) : 5 ±%
+12V(4) : 5 ±%
-12V : 10 ±%
+5Vsb : 5 ±%

DC ut - Linjeregulering
+3.3V : 1 ±%
+5V : 1 ±%
+12V(1) : 1 ±%
+12V(2) : 1 ±%
+12V(3) : 1 ±%
+12V(4) : 1 ±%
-12V : 1 ±%
+5Vsb : 1 ±%

DC ut - Maks. ripple
+3.3V : 50 mVpp
+5V : 50 mVpp
+12V(1) : 120 mVpp
+12V(2) : 120 mVpp
+12V(3) : 120 mVpp
+12V(4) : 120 mVpp
-12V : 120 mVpp
+5Vsb : 50 mVpp"
 
cyclone3d said:
Actually, ther is quite a bit of info on that site.. no hard to decifer for what is important...

I wish the USA online stores would list that much info about power supplies.. It even lists the location of the plugs on each power wire.

It is a 600w power supply with active PFC... It is probably a pretty decent power supply as junky ones usually don't have PFC of any kind.
Click to expand...

Correction: More USEFUL info on that site. Specifically, no mention of who actually made the PSU or the total amperage on the +12V rail. Both very important info needed in this case.

While yes having APFC does make it a bit better than PSUs without APFC, having APFC alone does not make it a good PSU as many PSUs with APFC can be crap.

The last three specificaltions list (Lastregulering, Linjeregulering, and the ripple reading) are more than likely fake like every other PSU specs sheet says.
 
Danny Bui said:
Correction: More USEFUL info on that site. Specifically, no mention of who actually made the PSU or the total amperage on the +12V rail. Both very important info needed in this case.

While yes having APFC does make it a bit better than PSUs without APFC, having APFC alone does not make it a good PSU as many PSUs with APFC can be crap.

The last three specificaltions list (Lastregulering, Linjeregulering, and the ripple reading) are more than likely fake like every other PSU specs sheet says.
Click to expand...

It looks like the people in Norway like the MIST brand:

http://forums.techarena.in/monitor-video-cards/1098297.htm

And if it tests anything like the 1000w version in this review... which supposedly has a newer revision with better caps, it is a pretty good power supply.

http://www.testseek.com/computers/p...w-p-ab3bf345-985b-7606-31a9-195eaef76aee.html

And yes, a pic of the PSU sticker would help, but I am fairly certain from what I have been able to find out that it is a pretty good power supply.
 
cyclone3d said:
It looks like the people in Norway like the MIST brand:

http://forums.techarena.in/monitor-video-cards/1098297.htm.
Click to expand...

To be fair, OCZ PSUs are well liked even though any enthusiast worth his salt would know how truly bad a majority of OCZ PSUs are once properly tested.

cyclone3d said:
And if it tests anything like the 1000w version in this review... which supposedly has a newer revision with better caps, it is a pretty good power supply.

http://www.testseek.com/computers/p...w-p-ab3bf345-985b-7606-31a9-195eaef76aee.html
Click to expand...

Not too shabby. However one problem with that review: no mention of what temperatures they test their PSUs at. There are many PSUs out there that will pass with flying colors at room temperature but fail once put into a real world temperature test (typically 45C to 50C).

However the internal pictures remind of a similar PSU. Just can't put my finger on it. Hmmmm...
 
Yeah, Mist PSUs got a good rep here in Norway, hopefully not just because it's Norwegian-made. The PSUs are made by a company that also sells parts, www.microplex.no

I think their early PSUs, way back now, were based off Fortron or CWT or something, but now they have their own components manufactured, don't know if they're really based on those anymore at all now really.

They use Japanese capacitors now.

They do good in tests...

I'm still wondering about that ampere thing though, but as I understand there's 20 available on each of the 12v rails so as long as I use two for the 5870 it should be fine.

I haven't been able to locate info on the total ampere for the PSU yet...


These guys do better tests than that linked to earlier in the thread, at very the top, not the post over this, that's the same people

http://www.hardware.no/artikler/mist_650_w/52129

I think this PSU is the closest to my 600w, same number of 12v rails and ampere on them.
 
odex said:
Yeah, Mist PSUs got a good rep here in Norway, hopefully not just because it's Norwegian-made. The PSUs are made by a company that also sells parts, www.microplex.no

I think their early PSUs, way back now, were based off Fortron or CWT or something, but now they have their own components manufactured, don't know if they're really based on those anymore at all now really.

They use Japanese capacitors now.

They do good in tests...

I'm still wondering about that ampere thing though, but as I understand there's 20 available on each of the 12v rails so as long as I use two for the 5870 it should be fine.

I haven't been able to locate info on the total ampere for the PSU yet...


These guys do better tests than that linked to earlier in the thread, at very the top, not the post over this, that's the same people

http://www.hardware.no/artikler/mist_650_w/52129

I think this PSU is the closest to my 600w, same number of 12v rails and ampere on them.
Click to expand...

Dude, just post a picture of the side of your 600W's PSU label. The number of 12V rails and amperage on them do not make the PSU you linked to close to the 600W you have.
 
Nice, I appreciate the help, thanks. I'm placing my order then.

How do you get the 44 number though?

I'm expecting the card to be bottlenecked on my q6600@3ghz but still expecting a nice performance jump from the 3870 I'm using now
 
odex said:
Nice, I appreciate the help, thanks. I'm placing my order then.

How do you get the 44 number though?

I'm expecting the card to be bottlenecked on my q6600@3ghz but still expecting a nice performance jump from the 3870 I'm using now
Click to expand...

See the box with the number 530W? See it how the borders begins and ends with the multiple +12V rails boxes above it? That 530W number tells us how much amperage total there is on the +12V rail. So 530W divided by 12 equals 44A.

So the PSU has a total of 44A on the +12V rail.
 
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