1866MHz RAM running at 931MHz?

[jacob_newman97]

Heres the deets,

Operating System
Windows 10 Pro 64-bit
CPU
Intel Core i7 3770 @ 3.40GHz 38 °C
Ivy Bridge 22nm Technology
RAM
16.0GB Dual-Channel DDR3 @ 931MHz (10-11-10-30)
Motherboard
Gigabyte Technology Co. Ltd. Z77-D3H (Intel Core i7-3770 CPU @ 3.40GHz) 28 °C
Graphics
27EA63 (1920x1080@60Hz)
BenQ E900W (1440x900@60Hz)
1279MB NVIDIA GeForce GTX 570 (CardExpert Technology) 57 °C
Storage
223GB INTEL SSDSC2BW240A4 ATA Device (SSD) 34 °C
931GB Seagate ST1000DM003-1CH162 ATA Device (SATA) 33 °C
Optical Drives
TSSTcorp CDDVDW SH-222BB ATA Device

i only just changed my ram because my last ram died, and im not sure why it is running so slow.

 

[Dark Lord of Tech]

Multiply 931 x2 because it's DDR ram.

It's running at 1862 mhz.

 

[drtweak]

The way the RAM works and why it is called DDR Ram.

DDR or Double Data Rate allows the RAM to be accessed on both the Tick and the Tock of each Hz. The ram itself is REALLY running at the 931 MHZ but because it is able to access it twice per Hz it runs at the 1862 which is what the effective clock rate is.

 

[utroz]

Real clock VS effective clock.. DDR= Double Data Rate so 931Mhz is the real clock and 1862Mhz is the effective clock speed. Also the reason it is not at 1866Mhz effective clock could have to do with system base clock speed, multipliers, and ratios that control the speed of your RAM.