eva2000

Received a new triple channel memory kit from folks at Gskill - 6GB Gskill Trident F3-16000CL9T-6GBTD. The Gskill Trident F3-16000CL9T-6GBTD is supposedly using Elpida BBSE memory ICs, while not as capable as Elpida Hyper 50mm ICs for >DDR3-2000Mhz 7-8-7-x speeds, they still hold their own for looser timings. I'll post my preliminary results here in preparation for a larger triple channel memory kit comparison review in the works


System:

• Intel Xeon W3540 3845B010
• EK Supreme LT 1366 / FESER 480 / MCP655
• Asus P6T6 WS Revolution
• Gskill Trident F3-16000CL9T-6GBTD
• 512MB Inno3D 8800GT OC Edition 190.62WHQL
• 750GB Samsung SATA
• Pioneer DVR-217 DVD-RW
• Corsair HX1000 PSU
• Dual Boot - WinXP Pro SP3 (nLite fully updated) with Vista Theme & Win7 Ultimate 64bit RTM

First hour using this kit and managed an overclock on these for 8x 32M Pi @DDR3-2124Mhz 9-9-9-24 1T at 1.72v. Asus P6T6 WS Revolution bios sets latencies pretty tight so good pi performance even for Win7 OS

Both 8x 32M Pi and single 32M Pi runs done in same windows session.





Shows promise, so now to let this memory kit get to know my Xeon W3540 + Asus P6T6 WS Revolution pairing

Timings and CMD Rate comparison

Some preliminary memory tests for new 6GB Gskill Trident F3-16000CL9T-6GBTD triple channel memory kit in preparation for a larger triple channel memory kit comparison review in the works

• 20x200bclk : 2000Mhz 99924 2T tRFC 98 1.66v 1.47500v
• 20x200bclk : 2000Mhz 99924 1T tRFC 98 1.66v 1.48125v
• 20x200bclk : 2000Mhz 89824 2T tRFC 98 1.66v 1.48125v
• 20x200bclk : 2000Mhz 89824 1T tRFC 98 1.66v 1.48125v
• 20x200bclk : 2000Mhz 79721 2T tRFC 88 1.66v 1.48750v
• 20x200bclk : 2000Mhz 79721 1T tRFC 88 1.72v 1.50000v
• 20x200bclk : 1600Mhz 67618 2T tRFC 88 1.66v 1.37500v
• 20x200bclk : 1600Mhz 67618 1T tRFC 88 1.66v 1.37500v
• 23x175bclk : 2100Mhz 99924 2T tRFC 98 1.70v 1.55000v
• 23x175bclk : 2100Mhz 99924 1T tRFC 98 1.72v 1.55000v
• 23x175bclk : 2100Mhz 89824 2T tRFC 98 1.72v 1.55000v
• 23x175bclk : 2100Mhz 89824 1T tRFC 98 1.72v 1.55000v

Detailed full screenshots for each configuration tested can be seen here.

eva2000

Well after my brief taste of mis-matched 12GB action, I want more So I plan to include some 12GB triple channel action in my comparison X58 triple channel kits review I have planned but as you will see from below findings some of the modules performance characteristics differed making 12GB config a bit trickier. So I'll start with testing 3x2GB configuration first on X58, then move onto the 2x2GB P55 dual channel platform for testing.

Haven't used A-Data memory since the old A-Data PC4000 (Hynix D43) era!

They consist of 3x 4GB A-Data Xtreme Series 2000X Dual Channel kits rated at 9-9-9-24 at 1.6-1.8v. Total cost was AUD$396 for 12GB so relatively cheap per gigabyte at just under the cost of 6GB G.Skill Trident 2000Mhz C9 kits at AUD$215 per 6GB kit.

Specifications:

• Module Type: 240Pin Unbuffered-DIMM Non ECC
• Capacity Available: 4GB Dual Channel Kit (2GBx2), 2GB Dual Channel Kit (1GBx2)
• IC Configuration: 128M x8
• Transmission Bandwidth: 16000MB/Sec(PC3-16000)
• Cas Latency Timing: 9-9-9-24
• Working Voltage: 1.6V-1.8V
• Lifetime warranty

• Starting prelim memtest86+ v4.0 tests and interesting 4 of the 6 modules (modules #1-4) can handle 2000mhz 7-8-7-24 with 3 of them at lower QPI/DRAM but 1 needs higher QPI/DRAM (module #3).
• The other 2 modules (modules #5 and #6) error out slightly in 7-8-7-24 at 2000mhz but handle 7-9-7-24 and 8-9-8-24 better with much lower vdimm than the other 4 modules <1.62v. More testing I guess
• Pairing up modules #1 + #2 + #4 can do 2000mhz 7-8-7-24 around 1.68v. Pairing up modules #5 + #6 + #3 can do 2000mhz 7-9-7-24 at 1.62v and like lower vdimm over high vdimm.

3x2GB Config testing

With the above memtest86+ v4.0 findings, I decided to test the two 3x2GB pairings separately:

• Kit 1: module #5 + #6 + #3
• Kit 2: module #1 + #2 + #4

System:

• Intel Core i7 920 3845B260
• EK Supreme LT 1366 / FESER 480 / MCP655
• Asus P6T6 WS Revolution
• A-Data Xtreme Series 2000X 9-9-9-24 1.6-1.8 rated memory
• 512MB Inno3D 8800GT OC Edition 190.62WHQL
• 750GB Samsung SATA
• Pioneer DVR-217 DVD-RW
• Corsair HX1000 PSU
• Dual Boot - WinXP Pro SP3 (nLite fully updated) with Vista Theme & Win7 Ultimate 64bit RTM

Kit 1: module #5 + #6 + #3

Kit #1, likes lower vdimm than Kit #2 and handles 2000Mhz 7-9-7-24 and 8-9-8-24 timings well. This is very first winxp pro sp3 bench run for single Super Pi 32M - easily done at DDR3-2097Mhz 8-9-8-24 2T at 1.64v.

DDR3-2000Mhz 9-9-9-24 1T at 1.64v
(Kit 1: module #5 + #6 + #3)

Keep in mind these A-Data 2000X modules are rated for 2x2GB 2000Mhz 9-9-9-24 1T at 1.6-1.8v. The XMP profile #2 on Asus P6T6 WS Revolution sets up the system with lower bclk speed (hence low 1.35v QPI/DRAM XMP profile) with higher 12x memory multiplier 2000Mhz 9-9-9-24 1T at 1.65v with QPI/DRAM at 1.35v, but I never use XMP profiles preferring to do it all manually which is always best Adding into the mix a 3rd 2GB module for 3x2GB configuration may usually require more QPI/DRAM (cpu vtt) and Vdimm voltage.

As you push higher bclk and memory speed and use 1T as opposed to 2T, you need more VDIMM and QPI/DRAM voltage. At 20x200bclk with 10x mem multi for DDR3-2000Mhz 9-9-9-24 1T I needed QPI/DRAM = 1.4875v and VDIMM = 1.64v and to do a slight bump in IOH/IOH PCI-E volts to 1.12v and 1.52v respectively to pass HyperPi v0.99b 8x32M Pi and Single Super Pi 32M.

Note: some i7 cpus might need slight higher vcore to pass HyperPi 8x32M, than vcore needed for LinX/Prime95






Interesting findings for me especially has I have a problematic module #3 in first kit1 which likes higher QPI/DRAM and VDIMM than module #5 and #6.

DDR3-2000Mhz 8-9-8-24 1T at 1.62v
(Kit 1: module #5 + #3 + #6)

DDR3-2137Mhz 8-9-8-24 1T at 1.64v
(Kit 1: module #5 + #3 + #6)

Will post rest of the results in A-Data's own thread here 12GB A-DATA 2000X DDR3 testing

eva2000

reserved #18

dinos22

aaaaaah the long awaited thread

love the shots, love the board, love the bios

looking forward to your insights mate

leeghoofd

The back to back CAs delay explained sir George : Back to Back Cas delay investigated, some less detailed info here : More back to back stuff

eva2000

Thanks Dino, the board so far looks very easy to overclock haven't come across any issues as yet

thanks, been reading up on the Back to Back CAS Delay interesting indeed although haven't come across any need to touch the setting yet as memory seems stable - but will see how it goes

eva2000

Updated above first overclock post with some back to back cas# delay results at AUTO/4/6 values. Not much difference between AUTO and 4 but quite a loss of read bandwidth at 6.

Super Pi 32M v1.5 | Everest Read/Write/Copy/Latency

• DDR3-1600Mhz 7-7-7-24 1T tRFC 88 with Back to Back CAS# Delay = AUTO = 9min 00.188s | 17322MB/s / 14447MB/s / 18641MB/s / 44.8ns
• DDR3-1600Mhz 7-7-7-24 1T tRFC 88 with Back to Back CAS# Delay = 4 = 8min 59.320s | 17391MB/s / 14476MB/s / 18687MB/s / 44.9ns
• DDR3-1600Mhz 7-7-7-24 1T tRFC 88 with Back to Back CAS# Delay = 6 = 9min 00.610s | 16682MB/s / 14462MB/s / 18350MB/s / 45.2ns

CryptiK

This board looks very nice. I look forward to some Corsair GT testing and some bclk testing.

The fact that the cpu needs only 1.320v load as opposed to 1.360 - 1.376v required with the other boards is encouraging regarding the PWM circuitry.