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Ram timings help(DDR3 1600) Old system.

I have this setup. I'm not planning on overclocking but trying to reduce the timings for best performance. So far it's helped my system feel quite a bit faster. Is there anything else good to drop. Prefereably without raising voltage. Is there a way to test total gain for all the changes? I know basic stuff like 8/800=0.01ns for the cas etc.. Not sure if there is something for overall operations.



Fedora 28

TX650W corsair 80Plus? (not sure which version. Very old one though. Might have to pull it out and look real quick. I've been wondering. That or find the box.)

Phenom II 1100t

GA-970GA-D3 Mobo rev.1 or 1.1

10603gb xlr8 pny? 410.78 drivers(real important here! 8p)

2x4 ddr3 1600 (9-9-9-24) viper 3 patriot memory (1.5v) PV38G160C9K

2x4 ddr3 1600 (9-11-9-27) Mushkin blackline (1.65V) 991991 (996991)


I have my Core performance Boost for my cpu on but the CPB boost itself. Memtest shows it increasing the lcaches speed. So all good by me. I'm also not likely to raise voltage as I'm still going to be using this system for a while(not using it for enough atm. Hoping star citizen will work for it.)


Anything lower on those given settings and memtest started getting errors. But so far I can run multiple runs and no errors at all. The only problem I got was system freezing when/if I used the CPB boost for the CPU. I'm wondering if that is either overheating(maybe new paste or better heastink) or if the psu is being overtaxed.


Anything not listed is on auto/default settings:(updated)


1T/2T Command Timing: 2T (had this at 1T but had problems and can no longer be set without issues)

CAS# latency: 9T (4T-12T)

Ras - Cas R/W Delay: 9T (5T-12T)

Row Precharge Delay: 9T (5T-12T)

Minimum Row Active Time: 15T (15T-30T)

TwTr Command Delay: 4T (4T-7T)

Write Recovery Time: 5T (5T-12T)

Precharge Time: 4T (4T-7T)

Row Cycle Time: 32T (11T-42T)

Ras - Ras Delay: 4T (4T-7T)


Is there any risk from changing the TwTr through Ras - Ras delay timings? I didn't play with the trfc because something said it could cause problems. And there are a bunch of other timings  in DCTs Drive strength and dcts addr/cmd timings sections. Not sure if those are safe to mess with.


Other timings:

Trfc0 for Dimm1, Dimm3: 160ns (90-110-160-300-350)

Trfc1 for Dimm2, Dimm4: 160ns (90-110-160-300-350)


**DCTs Drive Strength**

Proc0dt(ohms): Auto (240-120-60-Auto) DCT0 (60) DCT1 (60) (*auto=60)

DQS Drive Strength: Auto (0.75x-1.0x-1.25x-1.5x-Auto) DCT0 (1.25x) DCT1 (1.25x) (*auto=1.25x)

Data Drive Strength: Auto (0.75x-1.0x-1.25x-1.5x-Auto) DCT0 (1.25x) DCT1 (1.25x) (*auto=1.25x)

MemCLK Drive Strength: Auto (0.75x-1.0x-1.25x-1.5x-Auto) DCT0 (1.5x) DCT1 (1.5x) (*auto=1.5x)

Addr/cmd Drive Strength: Auto (1.0x-1.25x-1.5x-2.0x-Auto) DCT0 (2.0x) DCT1 (2.0x) (*auto=2.0x)

Cs/ODT Drive Strength Auto (1.0x-1.25x-1.5x-2.0x-Auto) DCT0 (1.5x) DCT1 (1.5x) (*auto=1.5x)

CKE Drive Strength: Auto (1.0x-1.25x-1.5x-2.0x-Auto) DCT0 (2.0x) DCT1 (2.0x) (*auto=2.0x)


**DCTs Addr/cmd Timings**

Addr/Cmd Setup Time: Auto (1/2T-1T)  DCT0 (1/2T) DCT1 (1/2T) (*auto=1/2T)

Addr/Cmd Find Delay: Auto (0/64-31/64)  DCT0 (0/64) DCT1 (0/64) (*auto=0/64)

CS/ODT Setup Time: Auto (1/2T-1T)  DCT0 (1/2T) DCT1 (1/2T) (*auto=1/2T)

CS/ODT Find Delay: Auto (0/64-31/64)  DCT0 (0/64) DCT1 (0/64) (*auto=0/64)

CKE Setup Time: Auto (1/2T-1T)  DCT0 (1T) DCT1 (1T) (*auto=1T)

CKE Find Delay: Auto (0/64-31/64)  DCT0 (19/64) DCT1 (19/64) (*auto=19/64) (actually it's now at 21/64, 21/64 on it's own.)


Channel Interleaving: Enabled - Disabled

Bank Interleaving: Enabled - Disabled

DQS Training Control: Skip DQS - Perform DQS

CKE Power Down Mode: Enabled - Disabled

MemClock Tri-Stating: Enabled - Disabled


Is there anything safe or good to optimize starting with the, "Other timings:" and down?


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what frequency is the CPU running at?

CPU: i7-2600K 4751MHz 1.44V (software) --> 1.47V at the back of the socket Motherboard: Asrock Z77 Extreme4 (BCLK: 103.3MHz) CPU Cooler: Noctua NH-D15 RAM: Adata XPG 2x8GB DDR3 (XMP: 2133MHz 10-11-11-30 CR2, custom: 2203MHz 10-11-10-26 CR1 tRFC:230 tREFI:14000) GPU: Asus GTX 1070 Dual (Super Jetstream vbios, +70(2025-2088MHz)/+400(8.8Gbps)) SSD: Samsung 840 Pro 256GB (main boot drive), Transcend SSD370 128GB PSU: Seasonic X-660 80+ Gold Case: Antec P110 Silent, 5 intakes 1 exhaust Monitor: AOC G2460PF 1080p 144Hz (150Hz max w/ DP, 121Hz max w/ HDMI) TN panel Keyboard: Logitech G610 Orion (Cherry MX Blue) with SteelSeries Apex M260 keycaps Mouse: BenQ Zowie FK1


Model: HP Omen 17 17-an110ca CPU: i7-8750H (0.125V core & cache, 50mV SA undervolt) GPU: GTX 1060 6GB Mobile (+80/+450, 1650MHz~1750MHz 0.78V~0.85V) RAM: 8+8GB DDR4-2400 18-17-17-39 2T Storage: 1TB HP EX920 PCIe x4 M.2 SSD + 1TB Seagate 7200RPM 2.5" HDD (ST1000LM049-2GH172), 128GB Toshiba PCIe x2 M.2 SSD (KBG30ZMV128G) gone cooking externally Monitor: 1080p 126Hz IPS G-sync


Desktop benching:

Cinebench R15 Single thread:168 Multi-thread: 833 

SuperPi (v1.5 from Techpowerup, PI value output) 16K: 0.100s 1M: 8.255s 32M: 7m 45.93s

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It's base clock is 3.3.


$ lscpu | grep MHz
CPU MHz:             965.181
CPU max MHz:         3300.0000
CPU min MHz:         800.0000

If I applied the TURBO CPB it could go up to 3.7 by default. Not sure if it still varies when turbo is on or if it stays at 3.7. I'll have to test that.


So far, at 3.3ghz, it's perfectly stable. Might need to stress the system more though. It had some problems with the Turbo CPB on though. I'm trying to find my old heatsink from my Q6600 to see if it fits this cpu. For some reason I think it didn't fit but i could be wrong. Hopefully I'm wrong.


Any chance I could get the voltage up to 1.65? The mushkin is designed for it. Not sure how it would effect the patriot memory.


BTW, updated the OP. I found my exact ram. ?


And could I get better timings by going down to 1333. Or since I'm at the lowest settings for most secondary timings would it likely be waiste and loose overall performance?


Can any of these setting cause problems that would not be detected in a memtest86+ test? I'm using v5.01.


TwTr Command Delay: 4T (4T-7T)

Write Recovery Time: 5T (5T-12T)

Precharge Time: 4T (4T-7T)

Row Cycle Time: 32T (11T-42T)

Ras - Ras Delay: 4T (4T-7T)


I'm getting slight problems with youtube videos stuttering. And in once case the system hung making a weird sound over the speakers. Like an intermittent pulse. Kind of like this:


Except it pulsed gently up and down in volume.


Edit: I'm still playing with settings. It may be my Cas is not happy at 8. It doesn't show errors in memtest but it freezes up when watching videos. So, still tightening timings. Trying tRAS at 15 with 9-9-9-15. 9-9-9-18 seemed stable. Hopefully it works.


All of the problems went away after putting the cas back to 9.

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