Fråga om RAM klockfrekvenser
Hej!
Jag är novis på detta, men har köpt Corsair 16GB (2x8GB) DDR4 3600MHz CL18 Vengeance LPX Svart
Mitt problem är dock att det inte verkar som de körs på 3600MHz.
Tittar jag i CPU-Z står det som följande:
Chipset
-------------------------------------------------------------------------
Northbridge Intel Skylake rev. 07
Southbridge Intel Z270 rev. 00
Graphic Interface PCI-Express
PCI-E Link Width x0
PCI-E Max Link Width x0
Memory Type DDR4
Memory Size 16 GBytes
Channels Dual
Memory Frequency 1098.0 MHz (1:16)
CAS# latency (CL) 18.0
RAS# to CAS# delay (tRCD) 19
RAS# Precharge (tRP) 19
Cycle Time (tRAS) 39
Row Refresh Cycle Time (tRFC) 374
Command Rate (CR) 2T
Uncore Frequency 4222.1 MHz
Host Bridge 0x191F
MCHBAR I/O Base address 0x0FED10000
MCHBAR I/O Size 19456
MCHBAR registers
Memory SPD
-------------------------------------------------------------------------
DIMM # 1
SMBus address 0x50
Memory type DDR4
Module format UDIMM
Manufacturer (ID) Corsair (7F7F9E00000000000000)
Size 8192 MBytes
Max bandwidth DDR4-2132 (1066 MHz)
Part number CMK16GX4M2B3600C18
Nominal Voltage 1.20 Volts
EPP no
XMP yes
XMP revision 2.0
AMP no
JEDEC timings table CL-tRCD-tRP-tRAS-tRC @ frequency
JEDEC #1 9.0-9-10-22-31 @ 666 MHz
JEDEC #2 10.0-10-11-25-35 @ 740 MHz
JEDEC #3 11.0-11-12-27-38 @ 814 MHz
JEDEC #4 12.0-12-13-30-42 @ 888 MHz
JEDEC #5 13.0-13-14-32-45 @ 962 MHz
JEDEC #6 14.0-14-15-35-49 @ 1037 MHz
JEDEC #7 15.0-15-15-36-50 @ 1066 MHz
JEDEC #8 16.0-15-15-36-50 @ 1066 MHz
XMP profile XMP-3596
Specification DDR4-3596
Voltage level 1.350 Volts
Min Cycle time 0.556 ns (1798 MHz)
Max CL 18.0
Min tRP 10.56 ns
Min tRCD 10.56 ns
Min tRAS 21.61 ns
Min tRC 32.24 ns
Min tRRD 3.89 ns
XMP timings table CL-tRCD-tRP-tRAS-tRC-CR @ frequency (voltage)
XMP #1 9.0-10-10-20-30-n.a @ 899 MHz (1.350 Volts)
XMP #2 10.0-11-11-22-33-n.a @ 1000 MHz (1.350 Volts)
XMP #3 11.0-12-12-24-36-n.a @ 1100 MHz (1.350 Volts)
XMP #4 12.0-13-13-26-39-n.a @ 1200 MHz (1.350 Volts)
XMP #5 13.0-14-14-29-42-n.a @ 1300 MHz (1.350 Volts)
XMP #6 14.0-15-15-31-46-n.a @ 1400 MHz (1.350 Volts)
XMP #7 15.0-16-16-33-49-n.a @ 1500 MHz (1.350 Volts)
XMP #8 16.0-17-17-35-52-n.a @ 1600 MHz (1.350 Volts)
XMP #9 17.0-18-18-37-55-n.a @ 1699 MHz (1.350 Volts)
XMP #10 18.0-19-19-39-58-n.a @ 1798 MHz (1.350 Volts)
XMP #11 19.0-19-19-39-58-n.a @ 1798 MHz (1.350 Volts)
XMP #12 20.0-19-19-39-58-n.a @ 1798 MHz (1.350 Volts)
DIMM # 2
SMBus address 0x52
Memory type DDR4
Module format UDIMM
Manufacturer (ID) Corsair (7F7F9E00000000000000)
Size 8192 MBytes
Max bandwidth DDR4-2132 (1066 MHz)
Part number CMK16GX4M2B3600C18
Nominal Voltage 1.20 Volts
EPP no
XMP yes
XMP revision 2.0
AMP no
JEDEC timings table CL-tRCD-tRP-tRAS-tRC @ frequency
JEDEC #1 9.0-9-10-22-31 @ 666 MHz
JEDEC #2 10.0-10-11-25-35 @ 740 MHz
JEDEC #3 11.0-11-12-27-38 @ 814 MHz
JEDEC #4 12.0-12-13-30-42 @ 888 MHz
JEDEC #5 13.0-13-14-32-45 @ 962 MHz
JEDEC #6 14.0-14-15-35-49 @ 1037 MHz
JEDEC #7 15.0-15-15-36-50 @ 1066 MHz
JEDEC #8 16.0-15-15-36-50 @ 1066 MHz
XMP profile XMP-3596
Specification DDR4-3596
Voltage level 1.350 Volts
Min Cycle time 0.556 ns (1798 MHz)
Max CL 18.0
Min tRP 10.56 ns
Min tRCD 10.56 ns
Min tRAS 21.61 ns
Min tRC 32.24 ns
Min tRRD 3.89 ns
XMP timings table CL-tRCD-tRP-tRAS-tRC-CR @ frequency (voltage)
XMP #1 9.0-10-10-20-30-n.a @ 899 MHz (1.350 Volts)
XMP #2 10.0-11-11-22-33-n.a @ 1000 MHz (1.350 Volts)
XMP #3 11.0-12-12-24-36-n.a @ 1100 MHz (1.350 Volts)
XMP #4 12.0-13-13-26-39-n.a @ 1200 MHz (1.350 Volts)
XMP #5 13.0-14-14-29-42-n.a @ 1300 MHz (1.350 Volts)
XMP #6 14.0-15-15-31-46-n.a @ 1400 MHz (1.350 Volts)
XMP #7 15.0-16-16-33-49-n.a @ 1500 MHz (1.350 Volts)
XMP #8 16.0-17-17-35-52-n.a @ 1600 MHz (1.350 Volts)
XMP #9 17.0-18-18-37-55-n.a @ 1699 MHz (1.350 Volts)
XMP #10 18.0-19-19-39-58-n.a @ 1798 MHz (1.350 Volts)
XMP #11 19.0-19-19-39-58-n.a @ 1798 MHz (1.350 Volts)
XMP #12 20.0-19-19-39-58-n.a @ 1798 MHz (1.350 Volts)
Och tittar jag i Enhetshanteraren så säger den såhär:
Memory
16,0 GB
Speed: 2263 MHz
Slots used: 2 of 4
Form factor: DIMM
Hardware reserved: 138 MB
Available 3,6 GB
Cached 3,6 GB
Committed 24,0/31,7 GB
Paged pool 840 MB
Non-paged pool 2,6 GB
In use (Compressed) 12,2 GB (1002 MB)
Min fundering är:
Varför når de inte upp till 3.6 som de borde?
Om jag vill köpa mer ram, måste de nya också vara 3.6 även fast jag inte ens når upp till dom hastigheterna?
Mitt moderkort: PRIME Z270-K
CPU: Intel i7 6700k
Mvh,
Goodsoup
