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Author Topic: temp/fan speed  (Read 1289 times)
dolby
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April 21, 2013, 07:54:34 AM
 #1


Care ar fi un raport corect si eficient intre temp/fan speed?

75 grade / 55% fan speed

sau

70 grade / 75% fan speed

sa las placa mai calda si prelungesc viata ventilatorului sau invers?

sau mai bine zis care e temp-target : 75 e bine?

thx

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M0ndialu
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April 21, 2013, 07:58:55 AM
 #2

eu am un Hd7950 temperatura maxima atinsa cand era cald 71 de Grade, in general sta sub 69G, coolerul il am pe automat functioneaza in medie la 50%, daca  e asa incinsa placa ta video eu recomand sa tii ventilatorul cat mai tare dat, pentru ca ventilatorul in cel mai rau caz il poti schimba dar placa daca se prajeste nu prea Smiley
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April 21, 2013, 09:19:04 AM
 #3

colegul Mondialu are dreptate... mai bine tii ventilatoarele mai turate si placa mai rece... Un ventilator costa vreo 30...60 lei. O placa... un pic mai mult decat atat :-)
dolby
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April 21, 2013, 01:24:58 PM
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Am pus si eu ipotetic 75 mai mult de 73 cu 67% fan speed nu am atins nici eu pana acuma dar ma gandesc ca vine vara si va fi jale Shocked

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philips
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April 21, 2013, 02:39:11 PM
 #5

Daca folosesti cgminer poti folosi parametrul --auto-fan pentru a mentine GPU la o temperatura constanta de 75 grade (ventilatoarele isi auto ajusteaza turatiile).

Daca doresti o anume temperatura poti folosi --auto-fan --temp-target 63
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April 22, 2013, 11:02:04 AM
 #6

Vin si eu cu niste intrebari...

Ce placi aveti voi care dau temperaturile astea? Temperaturile astea is in timp ce mineaza sau in jocuri?
Placile is puse in carcasa sau nu?
Ati facut overclock?
Ati lucrat la voltaje?

Spre exemplu, eu am 2 placi 7950:

MSI 7950 950/1550@1v: 78 grade cu 53% ventilator
Gigabyte 7950 1000/1250@1.25v: 77 grade cu 84% ventilator

Placile is in aer, nu intr-o carcasa.



philips
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April 22, 2013, 11:20:19 AM
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Cred ca relevant este sistemul de racire al placii respective, nu numele.
Mergi la sigur cu sistemul de racire standard (un singur ventilator in capat, intr-o carcasa care imbraca in totalitate placa video). Sunt foarte zgomotoase in schimb.
Cele cu doua/trei ventilatoare mari pe fata sunt...cum ti-e norocul (si producatorul).

Aici cred ca toata lumea vorbeste de temperaturi in minare.

In general un miner dedicat foloseste placi in aer liber, nu vad cum ai putea sa inghesui 4/5 placi puternice intr-o carcasa, sa-i pui capacul si sa te astepti la temperaturi rezonabile. (water cooling doar)

Overclock se face, da.
La voltaje e recomandat sa umblati doar pentru subvoltare, pentru cresterea eficientei si a profitului.
Un hashrate mai mare obtinut din supravoltare nu inseamna mai multi bani in portofel, ci mai putini.
Supravoltarea e buna doar daca nu platiti curentul, cineva totusi il plateste asa ca...
M0ndialu
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April 22, 2013, 11:20:58 AM
 #8

Eu am un Sapphire HD7950 Dual-x fara overclock cu toate frecventele stock.
Minez LTC scot in jur de 550-600Kh/s, placa video este in carcasa cu o parte descoperita nu sare de 71 de grade, media este de 68-69 cu ventilatorul pe automat in jur de 55% urca cel mult  Grin
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April 22, 2013, 11:26:31 AM
 #9

Ai!

Eu nu stiu zau cum stati linistiti cu temperaturile astea, daca ale mele sar de 63 m-apuca tremuriciul  Shocked

Dar nici o grija, multi stau pe 75 fara probleme, doar ca m-am obisnuit eu asa.
alexyno
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April 22, 2013, 12:40:27 PM
 #10

Ale mele cateodata ajung si pe la 85 de grade :-) Si merg fara pb.
dolby
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April 22, 2013, 01:47:01 PM
 #11

Vin si eu cu niste intrebari...

Ce placi aveti voi care dau temperaturile astea? Temperaturile astea is in timp ce mineaza sau in jocuri?
Placile is puse in carcasa sau nu?
Ati facut overclock?
Ati lucrat la voltaje?

Spre exemplu, eu am 2 placi 7950:

MSI 7950 950/1550@1v: 78 grade cu 53% ventilator
Gigabyte 7950 1000/1250@1.25v: 77 grade cu 84% ventilator

Placile is in aer, nu intr-o carcasa.





si eu am placile tale dar cred ca e vre'o problema cu iele...mai ales ca le ti in aer si ai temp cam mari.

Gigabyte 7950 1000/1250@1.25v: nu sare de 63 grade cu 65% ventilator

si

MSI 7950 1000/1250@1v: nu sare de 67 grade cu 55% ventilator (incearca sa scazi mh la memorie la 1250 vad ca o ti la 1550)

si le tin cu un mic oc la 1000Mhz pe toate intr-o carcasa semi-deschisa.

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pmihairo
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April 23, 2013, 07:54:10 AM
 #12

Mersi de input, ce viteza de hashing ai?
Eu scot 1.13 MHs constant de 2 zile cu sistemul ala.
dolby
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April 23, 2013, 01:57:42 PM
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2.150 Mhs... o fi bine o fi rau 4*7950 da subvoltate.

cati kh scoate al tau MSI si Gigabyte separat?

ai verificat in ce temp stau VRM de pe msi daca le ti la 1550 mhz?

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alexyno
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April 23, 2013, 04:00:16 PM
 #14

Cum masori temperatura de pe VRM-uri ? Nu exista senzor ptr temperatura VRM...
dolby
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April 23, 2013, 04:28:51 PM
 #15

MSI are  Grin arata atat temp de pe VRM1 cat si VRM2.  Wink

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pmihairo
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April 23, 2013, 04:32:42 PM
 #16

Ambele scot in jur de 550 KHs.
Am redus core la gigabyte de la 1000 la 900, s-a schimbat si voltajul automat - cred ca o sa-i fac un update de bios sa vad daca mai face asa. Voltajele erau fortate, cu core>1000, voltaj 1.25.

Nu pot sa masor decat temperatura la core, eu minez pe BAMT.

alexyno
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April 23, 2013, 04:41:19 PM
 #17

MSI are  Grin arata atat temp de pe VRM1 cat si VRM2.  Wink

VRM = Voltage Regulator Module
VRAM = Video RAM

Tu te referi la memorii... nu? :-)

VRM-urile sunt chestiile alea patrate de langa conectorul PCIe de 6 pini, care se incing ca dracu in timpul functionarii in forja.
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April 30, 2013, 09:25:23 PM
 #18

Astept sa vina riser-urile ca la mine se incalzeste de numa .... din cate am citit pana acuma trebuie sa fie sub 90 C dar e preferabil sa fie sub 80 ca sa nu ai nici o problema. La mine merge pana la 90 dar nu le tin sus numai noaptea ... e 38 C afara Smiley

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