Results 1 to 7 of 7

Thread: 92mm PWM Fan for 4870 advice

  1. #1
    Registered+
    Join Date
    Jun 2008
    Posts
    25
    Thanks
    0
    Thanked
    0 times in 0 posts

    92mm PWM Fan for 4870 advice

    Hi all,
    Does anyone have any experience of using PWM fans on the the Ati 4870 and could they make any recommendations for a good PWM? This is to mount to a HR03, I had previously tried a Nexus Real Silent PWM fan but it produced a whining noise.

    Thanks.

  2. #2
    Senior Member Pob255's Avatar
    Join Date
    Apr 2007
    Location
    The land of Brum
    Posts
    10,143
    Thanks
    608
    Thanked
    1,226 times in 1,123 posts
    • Pob255's system
      • Motherboard:
      • Asus M5A99X EVO
      • CPU:
      • FX8350 & CM Hyper 212+
      • Memory:
      • 4 x 2gb Corsair Vengence 1600mhz cas9
      • Storage:
      • 512gb samsung SSD +1tb Samsung HDD
      • Graphics card(s):
      • EGVA GTX970
      • PSU:
      • Seasonic GX 650W
      • Case:
      • HAF 912+
      • Operating System:
      • W7 Pro
      • Monitor(s):
      • iiyama XB3270QS-B1 32" IPS 1440p

    Re: 92mm PWM Fan for 4870 advice

    Graphics cards don't use PWM fans, they use 2pin basic DC and vary the voltage for change the speed dependent on the heat of the gpu within the cards bios
    It might of been the simple case that the card was just not supplying enough amps to the fan (larger fans require more amps)
    You should be able to plu the fan into the motherboard but then the card/drivers/card bios will have no control over it.

  3. #3
    Senior Member
    Join Date
    Dec 2007
    Location
    Northern Ireland
    Posts
    289
    Thanks
    7
    Thanked
    19 times in 19 posts
    • colmo's system
      • Motherboard:
      • Asrock 4Core1600-P35
      • CPU:
      • Intel Q6600
      • Memory:
      • 6Gb
      • Storage:
      • 160Gb + 320Gb + 1Tb +200Gb
      • Graphics card(s):
      • Gainward 8800GS 384mb
      • PSU:
      • Antec Earthwatts 380W
      • Case:
      • Antec Sonata
      • Operating System:
      • OpenSuse 64-bit
      • Monitor(s):
      • HP LP2065
      • Internet:
      • ADSL

    Re: 92mm PWM Fan for 4870 advice

    I've been trying something similar. In the end, I concluded PWM isn't the answer - I'm happy with the fixed-rpm Evercool EC8025M12S I ended up using.

    What you could do is use a fan with it's own thermal sensor. A quick check on eBay reveals Akasa make a number of them in different sizes.

  4. #4
    Senior Member
    Join Date
    Aug 2007
    Posts
    1,094
    Thanks
    11
    Thanked
    77 times in 75 posts
    • LuckyNV's system
      • Motherboard:
      • MSI GD65
      • CPU:
      • i5 750 w/ Thermalright Ultra120X
      • Memory:
      • 2x2GB DDR3-1600 Cas7
      • Storage:
      • 640GB.AAKS, 2xSamsung F1 1TB, 2xSamsung 64GB SLC SSD
      • Graphics card(s):
      • Sapphire HD6870 1GB
      • PSU:
      • Corsair HX620W
      • Case:
      • Coolermaster HAF-932
      • Operating System:
      • Windows 7 Pro 64bit
      • Monitor(s):
      • LG W2286L
      • Internet:
      • Be* Unlimited@21Mbps w/ Draytek 2710n

    Re: 92mm PWM Fan for 4870 advice

    Quote Originally Posted by Pob255 View Post
    Graphics cards don't use PWM fans, they use 2pin basic DC and vary the voltage for change the speed dependent on the heat of the gpu within the cards bios
    It might of been the simple case that the card was just not supplying enough amps to the fan (larger fans require more amps)
    You should be able to plu the fan into the motherboard but then the card/drivers/card bios will have no control over it.
    Many do actually, HD4870/HD4850 reference coolers use PWM fans, as do stock 8800GT and quite sure GTX260/280 cards, plus many more

  5. #5
    Flat cap, Whippets, Cave. Clunk's Avatar
    Join Date
    Jan 2006
    Posts
    11,056
    Thanks
    360
    Thanked
    725 times in 459 posts

    Re: 92mm PWM Fan for 4870 advice

    This should be what you are looking for.
    Quote Originally Posted by Blitzen View Post
    stupid betond belief.
    You owe it to yourself to click here really.

  6. #6
    Sharingan User
    Join Date
    Dec 2008
    Posts
    507
    Thanks
    39
    Thanked
    10 times in 10 posts
    • vincent.m's system
      • Motherboard:
      • GByte GA-Z77-D3H Z77
      • CPU:
      • Intel i5-3570K @ 3.40GHz
      • Memory:
      • 3XS 8GB CM3B8G2C1600L9L VENGENCE
      • Storage:
      • 320+500 gb Samsung SpinPoint
      • Graphics card(s):
      • GTX 9700
      • PSU:
      • CAIR 600W CP-9020048-UK
      • Case:
      • Antec P182
      • Operating System:
      • Windows 7-64
      • Monitor(s):
      • Dell 30 Inch
      • Internet:
      • Virgin 50mb

    Re: 92mm PWM Fan for 4870 advice

    when installing aftermarket heat sinks, what happened if you forget to put one on the small parts? you know the little ones that you just stick on..

  7. #7
    Registered+
    Join Date
    Jun 2008
    Posts
    25
    Thanks
    0
    Thanked
    0 times in 0 posts

    Re: 92mm PWM Fan for 4870 advice

    If you forget to put the heat sinks on the RAM depending on the clock of the RAM it will most likely make the card unstable. Back to my original question, the problem is with using PWM fans they are susceptible to producing acoustic noise, I wondered if there are any PWM fans out there that anyone has had first hand experience with which doesn't.

Thread Information

Users Browsing this Thread

There are currently 1 users browsing this thread. (0 members and 1 guests)

Similar Threads

  1. Antec300 - Fan based cooling advice
    By richieuk in forum PC Hardware and Components
    Replies: 10
    Last Post: 04-08-2008, 06:52 PM
  2. 15 Quid For A Case Fan?
    By crazyfool in forum PC Hardware and Components
    Replies: 42
    Last Post: 28-07-2008, 10:00 AM
  3. 92mm Fan Recommendations?
    By mccheese in forum PC Hardware and Components
    Replies: 3
    Last Post: 24-06-2008, 06:08 PM
  4. Fan direction query
    By DougMcDonald in forum PC Hardware and Components
    Replies: 13
    Last Post: 02-08-2007, 11:22 AM
  5. Opinions needed on alternate fan placement ideas
    By leon in forum Chassis and Mods
    Replies: 3
    Last Post: 19-02-2004, 02:32 PM

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •