Page 1 of 2 12 LastLast
Results 1 to 16 of 25

Thread: Are RAM sink's really help?

  1. #1
    Almost in control. autopilot's Avatar
    Join Date
    Dec 2004
    Location
    Region 2
    Posts
    4,071
    Thanks
    51
    Thanked
    12 times in 11 posts

    Are RAM sink's really help?

    I got some RAM sinks in my Hexus comp goodie bag. I am thinking of installing them in my new system when I upgrade, but do they really make a difference when overclocking? Or are they just a gimick?

    What are people's experiences with them?

  2. #2
    Senior Member Kezzer's Avatar
    Join Date
    Sep 2003
    Posts
    4,863
    Thanks
    12
    Thanked
    5 times in 5 posts
    They dissapate heat quicker i guess, what's the point in having them if they don't work?

  3. #3
    Now with added sobriety Rave's Avatar
    Join Date
    Jul 2003
    Location
    SE London
    Posts
    9,948
    Thanks
    501
    Thanked
    399 times in 255 posts
    Quote Originally Posted by KeZZeR
    They dissapate heat quicker i guess, what's the point in having them if they don't work?
    Lots of things are sold that don't actually do any good. Dom, I've seen them make a small difference on graphics card RAM (like maybe an extra 5-10MHz), but I don't think they make any odds on system RAM. You don't see the bandwidth nutters at xtremesystems painstakingly putting ramsinks on their modules, simply blowing a 120mm fan over them does the job fine.

  4. #4
    Goron goron Kumagoro's Avatar
    Join Date
    Mar 2004
    Posts
    3,009
    Thanks
    20
    Thanked
    141 times in 114 posts
    Both PC Extreme and custom PC seem to say they dont make much diff if any at all.

  5. #5
    Banned Smokey21's Avatar
    Join Date
    May 2005
    Location
    Stafford, Midlands
    Posts
    1,752
    Thanks
    0
    Thanked
    0 times in 0 posts
    Depends. Id say on Video cards, if you giving the ram extra voltage it helps, but there not really big enough to have a big impact.

    ViperJohns, massive heatsinks do the trick though. Even though people think GDDR 3 doesn't get hot, they wanna put some extra volts in a X800, and clock it past 630.

  6. #6
    Senior Member SilentDeath's Avatar
    Join Date
    Aug 2003
    Posts
    4,745
    Thanks
    38
    Thanked
    16 times in 11 posts
    Your all looking at this the wrong way.

    For example with my x850XTPE, each ram chip, of which there is 8, runs at 2v and has a max current of ~1A each (from samsung datasheet)

    Thats 2w for a tiny little chip with ~25-40c/w thermal resistance (not in datasheet) = temps atleat 80°c at stock.

    Adding ramsinks in this case wont do anything but make it cooler, and maybe the 0-30mhz increase from running it that much colder.

    For stock that is fine without, still to hot for my liking.. I would not o/c atall at that temp - good enough for retail boards for the 99% of people that wont try to make them faster...

    As soon as you o/c, you increase the current demands of each chip, becuase it is active a higher pecentage of the time which will make the chips slightly hotter.

    Trying to o/c without first you wont get very far atall becuase they are too hot, and it risks damaging the chips.

    Voltmodding the ram increases heat output a lot more and mut be done with ramsinks or they wont last very long. Voltmodding gives the most increase to ram o.c and it cant be done without them.

    Quote Originally Posted by Kumagoro
    Both PC Extreme and custom PC seem to say they dont make much diff if any at all.
    They are either testing the "bling" products or have not got a suitable item to test them on../dont understand why they are needed.
    Last edited by SilentDeath; 20-05-2005 at 02:32 PM.

  7. #7
    Senior Member skuzgib's Avatar
    Join Date
    Oct 2004
    Location
    Bromsgrove, Worcestershire / Durham
    Posts
    1,917
    Thanks
    6
    Thanked
    1 time in 1 post
    Quote Originally Posted by |SilentDeath|
    dont understand why they are needed.
    Most likely...


  8. #8
    Almost in control. autopilot's Avatar
    Join Date
    Dec 2004
    Location
    Region 2
    Posts
    4,071
    Thanks
    51
    Thanked
    12 times in 11 posts
    Oh well, may as well use them now i have them

  9. #9
    Member
    Join Date
    Jan 2005
    Posts
    86
    Thanks
    0
    Thanked
    0 times in 0 posts
    do these high temps of GDDR3 chips affect lifespan?
    ive heard many people talk about how cooling for the memory chips doesnt really matter at all. on the other hand, nvidia and ati design solutions to cool both the gpu and memory chips. if it is not nescessary, then why would they do it?

  10. #10
    Goron goron Kumagoro's Avatar
    Join Date
    Mar 2004
    Posts
    3,009
    Thanks
    20
    Thanked
    141 times in 114 posts
    Perceived quality of the product

  11. #11
    Senior Member
    Join Date
    Sep 2003
    Location
    Guernsey, channel rocks
    Posts
    247
    Thanks
    0
    Thanked
    0 times in 0 posts
    Quote Originally Posted by silon
    do these high temps of GDDR3 chips affect lifespan?
    ive heard many people talk about how cooling for the memory chips doesnt really matter at all. on the other hand, nvidia and ati design solutions to cool both the gpu and memory chips. if it is not nescessary, then why would they do it?
    If you looked at this in more detail, you would see that the majority of graphics cards which do have coolers over the RAM, are using DDR1 or 2. Those using GDDR3 actually have the cooler away from the RAM chips on the latest generation cards.

  12. #12
    Member
    Join Date
    Oct 2003
    Location
    Melbourne, Australia
    Posts
    186
    Thanks
    0
    Thanked
    0 times in 0 posts
    I've found in the past they've worked for me. For example, with the 9800SE, TweakMonster RAM sinks got me an extra 20Mhz. With my current setup, a cut up NB HS on the 6600GT got me from 1200Mhz to 1220Mhz. After a volt mod, I don't think I'd be able to get up to 1280Mhz without RAM sinks. Also there's a 120mm Delta sitting on a Zalman fan bracket cooling over the video card.
    Previous System
    ||3DMark01 - 18,533|3DMark03 - 6,501|Aqua Mark 3 - 43,912|[AthonXP 2500+@ 2.4Ghz - 12*200, Radeon 9800SE (unlocked) 440/369]||

    Current System
    ||3DMark01 - 30,949|3DMark03 - 18,122|3DMark05 - 8,483|3DMark06 - 4,222|||

  13. #13
    Registered User
    Join Date
    May 2005
    Location
    Putrajaya, Malaysia.
    Posts
    3
    Thanks
    0
    Thanked
    0 times in 0 posts
    I think ram sink really help when overclocking. My Hynix D43 simply overclock to 466MHz from 400Mhz

  14. #14
    Senior Member
    Join Date
    Nov 2004
    Posts
    2,028
    Thanks
    3
    Thanked
    34 times in 29 posts
    • YorkieBen's system
      • Motherboard:
      • Gigabyte P35-DS3R
      • CPU:
      • C2D E4600
      • Memory:
      • 4 x 1GB PC6400 Corsair XMS
      • Graphics card(s):
      • Leadtek 8800GT
      • PSU:
      • Corsair 520W
      • Case:
      • Silverstone TJ06
      • Monitor(s):
      • Philips 20" Widescreen
      • Internet:
      • Post Office Broadband
    alot of ATI high end cards dont cool tha RAM directly and they have high speed GDDR3 ram. AFAIK GDDR3 runs alot cooler than gddr1

    as for RAM modules I know CustomPC tested a Geil ram module with and without heatspreaders and they overclocked the same

  15. #15
    HEXUS webmaster Steve's Avatar
    Join Date
    Nov 2003
    Location
    Bristol
    Posts
    14,269
    Thanks
    286
    Thanked
    829 times in 469 posts
    • Steve's system
      • CPU:
      • Intel i3-350M 2.27GHz
      • Memory:
      • 8GiB Crucial DDR3
      • Storage:
      • 320GB HDD
      • Graphics card(s):
      • Intel HD3000
      • Operating System:
      • Ubuntu 11.10
    When overclocking RAM it's less about the heat preventing the o/c, and more about the heat from extra voltage killing it quicker... hence the RAMsinks.
    PHP Code:
    $s = new signature();
    $s->sarcasm()->intellect()->font('Courier New')->display(); 

  16. #16
    Senior Member SilentDeath's Avatar
    Join Date
    Aug 2003
    Posts
    4,745
    Thanks
    38
    Thanked
    16 times in 11 posts
    Well heres some numbers for samung mem (which is whats mainly used in gfx ram)
    Also note that small chips like these BGA ones probably have a junction>air thermal resistance around 30°c/w. Ive added the temps you can expect with them naked, under load.

    256mbit GDDR3 Max 2.1v, 1060mA = ~2w per chip. 90°c
    256mbit GDDR2 Max 1.9v, 430mA = <1w per chip. 60°c
    256mbit GDDR1 Max 2.7, 530mA = 1.4w per chip. 72°c
    Max PD = 2w.
    256mbit GDDR1 Max 1.9v, 615mA = 1.1w.
    Max PD = 3.3w.


    there were 3 datasheets on GDDR1 and I only bothered with two...
    Max PD was only listed for GDDR1 ram and I think it is not related to power output in normal operation.

    I would say that under no load, GDDR1 would still be near its max normal heat output, whereas with GDDR3 has very very low idle heat output. This may be why you percive it to run cooler, if you touched the rams while nothing is using the graphics.
    Last edited by SilentDeath; 24-05-2005 at 01:24 PM.

Page 1 of 2 12 LastLast

Thread Information

Users Browsing this Thread

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

Similar Threads

  1. What should I do about my RAM?
    By spindle in forum PC Hardware and Components
    Replies: 2
    Last Post: 20-03-2004, 02:44 PM
  2. Best Corsair RAM for Asus P4C800-E ?
    By solrak in forum PC Hardware and Components
    Replies: 28
    Last Post: 19-08-2003, 12:04 AM

Posting Permissions

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