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Can timings be tightened when underclocking fast memory?

post #1 of 11
Thread Starter 
I recently built a computer for the purpose of playing SWTOR, and I intend to upgrade my RAM and possibly CPU soon. My question relates to these upcoming decisions.

Relevant current components:
ASUS Sabertooth 990FX R2.0
Phenom II X4 965 BE C3
2x8GB DDR3-1333 Kingston ValueRAM (CL:9)

I bought the 1333 RAM because I didn't realize I could underclock memory (herp derp) and I thought stability might be an issue. Upon correcting both misconceptions, I realized that I should have bought DDR3-1600 with tight timings. So, I asked my wife if I could spend $100 on more RAM. She said I could. I then learned on these forums that upgrading to slightly faster RAM with the same timings as my current memory will have a negligible impact on my gaming performance.

However, as many of you can probably understand, when your woman tells you to go buy more computer hardware, you go buy more computer hardware. 'Nuff said.

So I got to thinking, I could buy some DDR3-1600 with tight timings, but if I want to upgrade my CPU in the not-so-distant future to, say, an FX-8350, I might want some DDR3-1866, which would be another $100 on top of the DDR3-1600.

Unless, I just bought the DDR3-1866 now (was considering this) and then underclocked it to suit my Phenom II.

I have also read here that Phenom IIs really fly when they've got some DDR3-1333 with insanely tight timings. However, I can't find any kits of 2x8GB of high performance DDR3-1333 on Newegg, and with the way browsers have been eating more and more memory in recent years, I'd really rather have 16 GB total with just two DIMMs.

So my question is, if I bought the G.Skill kit I linked two paragraphs ago, do you think I can really tighten up its timings if I underclock it to 1333? I mean, does the fact that it's rated for 1866 give me a bit of flexibility there? I don't expect to be able to get its CL down to 5 but it would be cool if I could get it down to 7 or 8.

Any thoughts are appreciated.

Thanks much!
post #2 of 11
Quote:
Originally Posted by frog7877 View Post

I recently built a computer for the purpose of playing SWTOR, and I intend to upgrade my RAM and possibly CPU soon. My question relates to these upcoming decisions.

Relevant current components:
ASUS Sabertooth 990FX R2.0
Phenom II X4 965 BE C3
2x8GB DDR3-1333 Kingston ValueRAM (CL:9)

I bought the 1333 RAM because I didn't realize I could underclock memory (herp derp) and I thought stability might be an issue. Upon correcting both misconceptions, I realized that I should have bought DDR3-1600 with tight timings. So, I asked my wife if I could spend $100 on more RAM. She said I could. I then learned on these forums that upgrading to slightly faster RAM with the same timings as my current memory will have a negligible impact on my gaming performance.

However, as many of you can probably understand, when your woman tells you to go buy more computer hardware, you go buy more computer hardware. 'Nuff said.

So I got to thinking, I could buy some DDR3-1600 with tight timings, but if I want to upgrade my CPU in the not-so-distant future to, say, an FX-8350, I might want some DDR3-1866, which would be another $100 on top of the DDR3-1600.

Unless, I just bought the DDR3-1866 now (was considering this) and then underclocked it to suit my Phenom II.

I have also read here that Phenom IIs really fly when they've got some DDR3-1333 with insanely tight timings. However, I can't find any kits of 2x8GB of high performance DDR3-1333 on Newegg, and with the way browsers have been eating more and more memory in recent years, I'd really rather have 16 GB total with just two DIMMs.

So my question is, if I bought the G.Skill kit I linked two paragraphs ago, do you think I can really tighten up its timings if I underclock it to 1333? I mean, does the fact that it's rated for 1866 give me a bit of flexibility there? I don't expect to be able to get its CL down to 5 but it would be cool if I could get it down to 7 or 8.

Any thoughts are appreciated.

Thanks much!
Do you really need 16gb of memory?
HTPC
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HTPC
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CPUMotherboardRAMHard Drive
AMD A-3870K AsRock A75 Pro (FM1) HyperX DDR3 1866 8 GB SAMSUNG 830 256gb 
Hard DriveOptical DriveCoolingOS
SAMSUNG EcoGreen F4 2TB Plextor Black Blu-ray Burner Phenom II X4 stock Cooler Windows 10 
MonitorPowerCase
LG M2762D-PM Glossy Black 27" 5ms (1920x1080) Antec HG 900 Gerenic ATX Case 
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post #3 of 11
Thread Starter 
Four years ago one might ask "Do you really need 8 GB of memory?" but today, 4 GB is far from enough for an enthusiast's machine (Wirth's Law). I really hope my machine lasts longer than four years, because computers are expensive, and I'd rather just spend the money now, because I can, so I don't need to later. I don't expect the machine to be "future-proof" - there's no such thing. But I built the machine as an investment, instead of buying yet another laptop (I've found that I don't compute much away from home). I'd rather put off making the same investment again until I need to. Spending an extra $50 now might help a bit, or not at all, but I've got the money, and I'm willing to pay, so why not?
post #4 of 11
G.SKILL Sniper Series 16GB is a little better for the same price.
I know that Crucial Ballistix 8GB is good too and I would just grap 2 sets. I got 2 set of Crucial Ballistix 8GB.
HTPC
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Hard DriveOptical DriveCoolingOS
SAMSUNG EcoGreen F4 2TB Plextor Black Blu-ray Burner Phenom II X4 stock Cooler Windows 10 
MonitorPowerCase
LG M2762D-PM Glossy Black 27" 5ms (1920x1080) Antec HG 900 Gerenic ATX Case 
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HTPC
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Hard DriveOptical DriveCoolingOS
SAMSUNG EcoGreen F4 2TB Plextor Black Blu-ray Burner Phenom II X4 stock Cooler Windows 10 
MonitorPowerCase
LG M2762D-PM Glossy Black 27" 5ms (1920x1080) Antec HG 900 Gerenic ATX Case 
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post #5 of 11
Thread Starter 
Awesome, thanks much. Will do!
post #6 of 11
You usually can. My KHX2000T1s are rated at 2000 CL8-8-8-24 1.65V, and I'm running them at 1666MHz 6-6-6-18 1.67V.
   
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AGP bencher
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post #7 of 11
Quote:
Originally Posted by Artikbot View Post

You usually can. My KHX2000T1s are rated at 2000 CL8-8-8-24 1.65V, and I'm running them at 1666MHz 6-6-6-18 1.67V.
Nice.
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AMD A-3870K AsRock A75 Pro (FM1) HyperX DDR3 1866 8 GB SAMSUNG 830 256gb 
Hard DriveOptical DriveCoolingOS
SAMSUNG EcoGreen F4 2TB Plextor Black Blu-ray Burner Phenom II X4 stock Cooler Windows 10 
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LG M2762D-PM Glossy Black 27" 5ms (1920x1080) Antec HG 900 Gerenic ATX Case 
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HTPC
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SAMSUNG EcoGreen F4 2TB Plextor Black Blu-ray Burner Phenom II X4 stock Cooler Windows 10 
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post #8 of 11
For 16GB it's only 40$ extra if you upgrade to 2133 RAM biggrin.gif ( http://www.newegg.com/Product/Product.aspx?Item=N82E16820231568 < 1600, http://www.newegg.com/Product/Product.aspx?Item=N82E16820231571 < 2133 )
But if you use just merely 8GB on 2 sticks get the Samsung mv3v4g3d, their timings can be real tight
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Ayase Eli
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post #9 of 11
http://valid.canardpc.com/2712543
Edited by dixson01974 - 3/1/13 at 1:29am
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Hard DriveOptical DriveCoolingOS
SAMSUNG EcoGreen F4 2TB Plextor Black Blu-ray Burner Phenom II X4 stock Cooler Windows 10 
MonitorPowerCase
LG M2762D-PM Glossy Black 27" 5ms (1920x1080) Antec HG 900 Gerenic ATX Case 
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HTPC
(11 items)
 
  
CPUMotherboardRAMHard Drive
AMD A-3870K AsRock A75 Pro (FM1) HyperX DDR3 1866 8 GB SAMSUNG 830 256gb 
Hard DriveOptical DriveCoolingOS
SAMSUNG EcoGreen F4 2TB Plextor Black Blu-ray Burner Phenom II X4 stock Cooler Windows 10 
MonitorPowerCase
LG M2762D-PM Glossy Black 27" 5ms (1920x1080) Antec HG 900 Gerenic ATX Case 
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post #10 of 11
To be honest, I don't see much reason to spend another $50-100 "just" on memory, unless you REALLY want (or are obliged) to. As you're gaming - you'll barely notice any difference from faster RAM, so I'd rather invest the money in better graphics.

Still, if you want the best sub-$100 2x8GB no matter what, I would recommend buying either these or these.
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