Newbie Memory Question
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Chipset
Northbridge Intel Skylake rev. 07
Southbridge Intel Skylake PCH rev. 31
Graphic Interface PCI-Express
PCI-E Link Width x16
PCI-E Max Link Width x16
Memory Type DDR4
Memory Size 16 GBytes
Channels Dual
Memory Frequency 799.5 MHz (1:12)
CAS# latency (CL) 16.0
RAS# to CAS# delay (tRCD) 16
RAS# Precharge (tRP) 16
Cycle Time (tRAS) 39
Row Refresh Cycle Time (tRFC) 313
Command Rate (CR) 2T
Uncore Frequency 3999.0 MHz
Host Bridge 0x191F
Northbridge Intel Skylake rev. 07
Southbridge Intel Skylake PCH rev. 31
Graphic Interface PCI-Express
PCI-E Link Width x16
PCI-E Max Link Width x16
Memory Type DDR4
Memory Size 16 GBytes
Channels Dual
Memory Frequency 799.5 MHz (1:12)
CAS# latency (CL) 16.0
RAS# to CAS# delay (tRCD) 16
RAS# Precharge (tRP) 16
Cycle Time (tRAS) 39
Row Refresh Cycle Time (tRFC) 313
Command Rate (CR) 2T
Uncore Frequency 3999.0 MHz
Host Bridge 0x191F
Memory SPD
DIMM # 1
SMBus address 0x51
Memory type DDR4
Module format UDIMM
Manufacturer (ID) Team Group Inc. (7F7F7F7FEF0000000000)
Size 8192 MBytes
Max bandwidth DDR4-2401 (1200 MHz)
Part number TEAMGROUP-UD4-2400
Serial number 01033572
Manufacturing date Week 09/Year 16
Nominal Voltage 1.20 Volts
EPP no
XMP no
AMP no
JEDEC timings table CL-tRCD-tRP-tRAS-tRC @ frequency
JEDEC #1 11.0-11-11-27-38 @ 825 MHz
JEDEC #2 12.0-12-12-29-41 @ 900 MHz
JEDEC #3 13.0-13-13-32-45 @ 975 MHz
JEDEC #4 14.0-15-15-34-48 @ 1051 MHz
JEDEC #5 15.0-16-16-37-52 @ 1126 MHz
JEDEC #6 16.0-16-16-39-55 @ 1200 MHz
JEDEC #7 18.0-16-16-39-55 @ 1200 MHz
DIMM # 1
SMBus address 0x51
Memory type DDR4
Module format UDIMM
Manufacturer (ID) Team Group Inc. (7F7F7F7FEF0000000000)
Size 8192 MBytes
Max bandwidth DDR4-2401 (1200 MHz)
Part number TEAMGROUP-UD4-2400
Serial number 01033572
Manufacturing date Week 09/Year 16
Nominal Voltage 1.20 Volts
EPP no
XMP no
AMP no
JEDEC timings table CL-tRCD-tRP-tRAS-tRC @ frequency
JEDEC #1 11.0-11-11-27-38 @ 825 MHz
JEDEC #2 12.0-12-12-29-41 @ 900 MHz
JEDEC #3 13.0-13-13-32-45 @ 975 MHz
JEDEC #4 14.0-15-15-34-48 @ 1051 MHz
JEDEC #5 15.0-16-16-37-52 @ 1126 MHz
JEDEC #6 16.0-16-16-39-55 @ 1200 MHz
JEDEC #7 18.0-16-16-39-55 @ 1200 MHz
This should show Memory Frequency 1200MHz with 16,16,16,36 timings
Update the bios, enable XMP and check CPU-Z again
So further update, did the bios upgrade and it showed 2400, i went back to the bios settings to put my overclock back, motherboard has a 20,40,60,80,100% overclock setting, when i did that to put my overclock to 40%, it brings the memory speed down!!
I would advise against using the overclock profiles and set everything manually.
When you're setting a 40% oc you're changing the base clock which causes the memory clocks to be far higher than stock. A 40% increase on 2133mhz means you're trying to set your ram at 2986mhz which just isn't going to happen.
Best thing to do is set everything to stock. Start by setting your ram to manual and disable XMP. Set the memory clock to 2133 with the rated timings and in small increments overclock the cpu.
Remember, increasing the base clock will increase the ram clock so you will need to keep the memory clock as close to 2133 as possible by changing the frequency ratio.
If you're not entirely sure what you're doing, find some guides for your cpu.
When you're setting a 40% oc you're changing the base clock which causes the memory clocks to be far higher than stock. A 40% increase on 2133mhz means you're trying to set your ram at 2986mhz which just isn't going to happen.
Best thing to do is set everything to stock. Start by setting your ram to manual and disable XMP. Set the memory clock to 2133 with the rated timings and in small increments overclock the cpu.
Remember, increasing the base clock will increase the ram clock so you will need to keep the memory clock as close to 2133 as possible by changing the frequency ratio.
If you're not entirely sure what you're doing, find some guides for your cpu.
Make sure you're on latest BIOS and that it is set to default. Reset to default if in doubt. Set XMP for the memory.
Then go to Advanced CPU Core Settings:
http://postimage.org/
Once there, you're interested in the Turbo Ratio (for each core) and the Uncore Ratio. Leave everything else as is for now.
Change the Turbo ratios for each core to 45. Change Uncore Ratio to 44. Save and exit.
Run a bench or stress test. Cinebench is nice and short so it's pretty ideal for preliminary checks. Keep eye on max CPU temp and max Vcore. If it doesn't crash, and CPU temp is within reason and Vcore is within reason (try stay under 1.4v for now), then enter BIOS again and increase the values you tinkered with, by 1. i.e. Turbo Ratios to 46 and Uncore Ratio to 45.
Rinse and repeat. Report back here when you crash or when Vcore starts to exceed 1.4v or temps are a bit high (over 80C would be particularly high for Cinebench).
Doing the above, the Gaming K3 I played with automatically set a max 1.366 Vcore for an i7-6700K at 4700MHz, which is great, so I left it there. Performance will vary from cpu to cpu.
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