Results 1 to 7 of 7

Thread: DDR4 timings vs speed

  1. #1
    Senior Lurker
    Join Date
    Sep 2008
    Posts
    1,038
    Thanks
    202
    Thanked
    59 times in 58 posts
    • Englander's system
      • Motherboard:
      • ASUS Z170 Pro Gaming
      • CPU:
      • i5-6500
      • Memory:
      • 2x8GB Corsair Vengeance LPX 2666MHz
      • Storage:
      • SanDisk 128GB SSD
      • Graphics card(s):
      • Intel HD 530 Integrated Graphics
      • PSU:
      • Be Quiet! Straight Power 10 400W
      • Case:
      • Corsair Carbide 100R Silent Edition
      • Operating System:
      • Windows 10 64bit
      • Monitor(s):
      • Dell U2515H
      • Internet:
      • Plusnet 38Mb/2Mb

    DDR4 timings vs speed

    Just out of curioisty, for the same price, one can purchase 2666MHz RAM with timings of 16-18-18-35 or 2400MHz RAM with timings of 14-16-16-31.

    I'm guessing the difference in real world performance is mind bogglingly small, but if you had to pick one, which would it be?

  2. #2
    Senior Member kalniel's Avatar
    Join Date
    Aug 2005
    Posts
    28,693
    Thanks
    1,410
    Thanked
    2,835 times in 2,303 posts
    • kalniel's system
      • Motherboard:
      • Gigabyte X58A UD3R rev 2
      • CPU:
      • Intel i7 950
      • Memory:
      • 12gb DDR3 2000
      • Graphics card(s):
      • AMD HD7870
      • PSU:
      • XFX Pro 650W
      • Case:
      • Cooler Master HAF 912
      • Operating System:
      • Win 7 Pro x64
      • Monitor(s):
      • Dell U2311H
      • Internet:
      • O2 8mbps

    Re: DDR4 timings vs speed

    I expect they're basically the same RAM - as you increase the freq you loosen the timings, so you've got a choice of either (and can presumable set either up either way).

    So firstly, whichever is cheapest, and then I'd set up depending on whether my system supported 2666 - if so, I'd tend to go for that over timings for DDR4, but I wouldn't mind if I had to go slower with tighter timings.

  3. #3
    Senior Lurker
    Join Date
    Sep 2008
    Posts
    1,038
    Thanks
    202
    Thanked
    59 times in 58 posts
    • Englander's system
      • Motherboard:
      • ASUS Z170 Pro Gaming
      • CPU:
      • i5-6500
      • Memory:
      • 2x8GB Corsair Vengeance LPX 2666MHz
      • Storage:
      • SanDisk 128GB SSD
      • Graphics card(s):
      • Intel HD 530 Integrated Graphics
      • PSU:
      • Be Quiet! Straight Power 10 400W
      • Case:
      • Corsair Carbide 100R Silent Edition
      • Operating System:
      • Windows 10 64bit
      • Monitor(s):
      • Dell U2515H
      • Internet:
      • Plusnet 38Mb/2Mb

    Re: DDR4 timings vs speed

    Thanks, that's about what I thought.

  4. #4
    DILLIGAF GoNz0's Avatar
    Join Date
    Jun 2006
    Location
    Derby
    Posts
    10,796
    Thanks
    621
    Thanked
    1,168 times in 929 posts
    • GoNz0's system
      • Motherboard:
      • Asus Rampage V Extreme
      • CPU:
      • i7 something X99 based
      • Memory:
      • 16gb GSkill
      • Storage:
      • 4 SSD's + WD Red
      • Graphics card(s):
      • GTX980 Strix WC
      • PSU:
      • Enermax Galaxy 1250 (9 years and counting)
      • Case:
      • Corsair 900D
      • Operating System:
      • win10 64bit
      • Monitor(s):
      • Dell 24"
      • Internet:
      • 220mb Cable

    Re: DDR4 timings vs speed

    Depends on the configuration, if you go for quad channel it will be a lot faster, but then you go into X99 Haswell-E, never looked back personally.

    Capitalization is the difference between helping your Uncle Jack
    off a horse and helping your uncle jack off a horse.

  5. #5
    Senior Lurker
    Join Date
    Sep 2008
    Posts
    1,038
    Thanks
    202
    Thanked
    59 times in 58 posts
    • Englander's system
      • Motherboard:
      • ASUS Z170 Pro Gaming
      • CPU:
      • i5-6500
      • Memory:
      • 2x8GB Corsair Vengeance LPX 2666MHz
      • Storage:
      • SanDisk 128GB SSD
      • Graphics card(s):
      • Intel HD 530 Integrated Graphics
      • PSU:
      • Be Quiet! Straight Power 10 400W
      • Case:
      • Corsair Carbide 100R Silent Edition
      • Operating System:
      • Windows 10 64bit
      • Monitor(s):
      • Dell U2515H
      • Internet:
      • Plusnet 38Mb/2Mb

    Re: DDR4 timings vs speed

    Quote Originally Posted by GoNz0 View Post
    Depends on the configuration, if you go for quad channel it will be a lot faster, but then you go into X99 Haswell-E, never looked back personally.
    Well I'm thinking more in the context of an i5 6500 + Z170 motherboard.

  6. #6
    DILLIGAF GoNz0's Avatar
    Join Date
    Jun 2006
    Location
    Derby
    Posts
    10,796
    Thanks
    621
    Thanked
    1,168 times in 929 posts
    • GoNz0's system
      • Motherboard:
      • Asus Rampage V Extreme
      • CPU:
      • i7 something X99 based
      • Memory:
      • 16gb GSkill
      • Storage:
      • 4 SSD's + WD Red
      • Graphics card(s):
      • GTX980 Strix WC
      • PSU:
      • Enermax Galaxy 1250 (9 years and counting)
      • Case:
      • Corsair 900D
      • Operating System:
      • win10 64bit
      • Monitor(s):
      • Dell 24"
      • Internet:
      • 220mb Cable

    Re: DDR4 timings vs speed

    Quote Originally Posted by Englander View Post
    Well I'm thinking more in the context of an i5 6500 + Z170 motherboard.
    Everything will head that way so why not spend the money now and the ram can be used in your next build, I always take the attitude of spend what you can now and it may last longer as in transferring to new builds.

    BUT and it is a big BUT!
    Do not combine DDR4 kits as that will be the reason your PC becomes unstable.

    Capitalization is the difference between helping your Uncle Jack
    off a horse and helping your uncle jack off a horse.

  7. #7
    Registered+
    Join Date
    Jan 2016
    Posts
    20
    Thanks
    0
    Thanked
    0 times in 0 posts

    Re: DDR4 timings vs speed

    just as a heads up, the formula to calculate clock timings is:

    (1/(0.5*Frequency))* CAS latency

    So to answer OP's question:

    2666MHz RAM with timings of 16-18-18-35 : 12 nano secs
    2400MHz RAM with timings of 14-16-16-31 : 11.67 nano secs

    So objectively, the latter should be faster by approx 0.33 nano secs. The real world difference however, shouldn't be that noticeable. I'd personally go for the cheaper one of the two

Thread Information

Users Browsing this Thread

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

Posting Permissions

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