OC Report: 1GBit Qimonda DDR3 in Corsair ver1.1 Dominators (1600c9 1.8V rated)
###Motivation
I played the cex lottery, and the 2x2GB DDR3-2000 I bought showed up as DDR3-1600. I guess "PC3-16000" confuses people. Even worse, it was ver1.1 qimonda rated for 9-9-9-24 1.8V. So, I wanted to get on with a quick test, see if it's worth spending longer on them, then probably toss them.
###Overclocking TL;DR
Voltage scaling on this set stops somewhere around 1.7-1.8V, 1.9V is worse. Best timings at DDR3-1600 are 8-8-6-21, at 1.7V or 1.8V.
###Test Setup
| | ----|---- CPU | Core 2 Duo E8200 RAM | 2x2GB Corsair TW3X4G1600C9D Motherboard | ASUS P5Q3 Deluxe PSU | EVGA G3 1000W Cooling | Stock CPU cooler, Corsair Dominator ram fan
###Test Log
The starting point was arbitary here - it's what happened to be set up from messing with something else. I was surprised it booted but went with it.
| Speed | Timings | Set Voltage | Result | Notes |
|---|---|---|---|---|
| 1560 | 8-8-8-24 | 1.66V | memetest86+ pass | Surprised this worked |
| 1600 | 8-8-8-24 | 1.66V | memetest86+ pass | |
| 1600 | 8-8-7-24 | 1.66V | memetest86+ pass | |
| 1600 | 7-8-7-24 | 1.66V | POST, freeze | |
| 1600 | 8-7-7-24 | 1.66V | POST, freeze | |
| 1600 | 8-8-6-24 | 1.66V | a few errors in memetest86+ test 4 (moving inversions), freeze in test 7 (block move) | |
| 1600 | 8-8-7-21 | 1.66V | a few errors then freeze in memetest86+ test 7 (block move) | |
| 1600 | 8-8-7-24 | 1.80V | memetest86+ pass | This is actually the rated voltage anyway |
| 1600 | 7-7-7-24 | 1.80V | no POST | |
| 1600 | 7-8-7-24 | 1.80V | no POST | |
| 1600 | 8-7-7-24 | 1.80V | POST, freeze | |
| 1600 | 8-8-6-24 | 1.80V | memetest86+ pass | |
| 1600 | 8-8-6-21 | 1.80V | memetest86+ pass | Best settings |
| 1600 | 8-8-6-21 | 1.90V | 1000s of memtest86+ errors | Roll-over confirmed going above 1.8V |
| 1600 | 8-8-6-21 | 1.70V | memetest86+ pass | Best settings at lower voltage |
| 1600 | 7-8-6-21 | 1.70V | no POST | Testing if anything is improved by dropping voltage |
| 1600 | 8-7-6-21 | 1.70V | POST, freeze | It's not |
| 1600 | 8-8-7-24 | 1.60V | POST, freeze | tRP scales from higher voltage, but might other timings prefer lower voltage? |
| 1600 | 8-8-8-24 | 1.60V | POST, freeze | |
| 1600 | 8-8-8-27 | 1.60V | POST, freeze | |
| 1600 | 8-8-8-28 | 1.60V | POST, freeze | |
| 1600 | 8-8-9-28 | 1.60V | POST, freeze | |
| 1600 | 8-9-8-28 | 1.60V | POST, freeze | |
| 1600 | 8-8-9-28 | 1.60V | POST, freeze | |
| 1600 | 9-8-8-28 | 1.60V | POST, freeze | No. |
Posted Mar 8, 2021, 11:38 PM UTC