2GB G.Skill F2-8500CL5D-2GBPK - 8 layer PCB + DFI LT X38-T2R

[eva2000]

Thanks to folks at G.Skill got a new DDR2 kit of memory to play with - 2x1GB G.Skill F2-8500CL5D-2GBPK 8 layer PCB dual channel kit. All that I have been told is that these use non-Micron D9 ICs but not sure what they use but they seem to perform very well so far



System

• Intel Core 2 Duo E8500 Q740A493T 2L7**** / **1808
• CPU Cooling: Corsair Nautilus 500 H20
• DFI LP LT X38-T2R 1/11 official bios
• 128MB Gainward FX5200 PCI
• 2x1GB G.Skill F2-8500CL5D-2GBPK 8 Layer PCB dual channel kit
• 750GB Samsung HD753LJ
• Pioneer DVD-RW
• 620W Corsair HX620 PSU
• WinXP Pro SP2

@533Mhz 5-5-5-15 at 2.00v bios (1.93-1.95v Smartguardian)






Click image for larger screenshot

Super Pi single & dual 32M




Everest Ultimate Bandwidth & SPD




Prime95 v25.6 Blend Idle & Load





DFI LP LT X38-T2R 1/11 Official Bios Settings

PC Health Status
Adjust CPU Temp: +9

CPU Feature
- Thermal Management Control: Disabled
-  PPM(EIST) Mode: Disabled
- Limit CPUID MaxVal: Disabled
- CIE Function: Disabled
- Execute Disable Bit: Disabled
- Virtualization Technology: Disabled
- Core Multi-Processing: Enabled

Exist Setup Shutdown: Mode 2
Shutdown after AC Loss: Disabled
CLOCK VC0 divider: AUTO
CPU Clock Ratio Unlock: Enabled
CPU Clock Ratio: 9.5x
- Target CPU Clock: 3375
CPU N/2 Ratio: Enabled
CPU Clock: 355
Boot Up Clock: AUTO
DRAM Speed: 266/800
- Target DRAM Speed: 1067
PCIE Clock: 100mhz
PCIE Slot Config: 1X 1X

CPU Spread Spectrum: Disabled
PCIE Spread Spectrum: Disabled
SATA Spread Spectrum: Disabled

Voltage Settings
CPU VID Control: 1.1875v
CPU VID Special Add: AUTO
DRAM Voltage Control: 2.00v
SB Core/CPU PLL Voltage: 1.51
NB Core Voltage: 1.530
CPU VTT Voltage: 1.200
Vcore Droop Control: Enabled
Clockgen Voltage Control: 3.45v
GTL+ Buffers Strength: Strong
Host Slew Rate: Weak
GTL REF Voltage Control: Disable
x CPU GTL1/3 REF Volt: 110
x CPU GTL 0/2 REF Volt: 110
x North Bridge GTL REF Volt: 110

DRAM Timing
- Enhance Data transmitting: FAST 
- Enhance Addressing: FAST
- T2 Dispatch: Enabled 

Clock Setting Fine Delay
Ch1 Clock Crossing Setting: More Aggressive
- DIMM 1 Clock fine delay: Current 89
- DIMM 2 Clock fine delay: Current 456
- DIMM 1 Control fine delay: Current 534
- DIMM 2 Control fine delay: Current 289
- Ch 1 Command fine delay: Current 801

Ch2 Clock Crossing Setting: More Aggressive
- DIMM 3 Clock fine delay: Current 89
- DIMM 4 Clock fine delay: Current 400
- DIMM 3 Control fine delay: Current 387
- DIMM 4 Control fine delay: Current 356
- Ch 2 Command fine delay: Current 801

Ch1Ch2 CommonClock Setting: More Aggressive

Ch1 RDCAS GNT-Chip Delay: Auto
Ch1 WRCAS GNT-Chip Delay: Auto
Ch1 Command to CS Delay: Auto

Ch2 RDCAS GNT-Chip Delay: Auto
Ch2 WRCAS GNT-Chip Delay: Auto
Ch2 Command to CS Delay: Auto (where cpuz sees 1T or 2T SETTING)

CAS Latency Time (tCL): 5
RAS# to CAS# Delay (tRCD): 5
RAS# Precharge (tRP): 5
Precharge Delay (tRAS): 15
All Precharge to Act: AUTO
REF to ACT Delay (tRFC): 42
Performance LVL (Read Delay) (tRD): AUTO

Read delay phase adjust: Enter

Ch1 Read delay phase (4~0)
- Channel 1 Phase 0 Pull-In: AUTO
- Channel 1 Phase 1 Pull-In: AUTO
- Channel 1 Phase 2 Pull-In: AUTO
- Channel 1 Phase 3 Pull-In: AUTO
- Channel 1 Phase 4 Pull-In: AUTO

Ch2 Read delay phase (4~0)
- Channel 2 Phase 0 Pull-In: Auto
- Channel 2 Phase 1 Pull-In: Auto
- Channel 2 Phase 2 Pull-In: Auto
- Channel 2 Phase 3 Pull-In: Auto
- Channel 2 Phase 4 Pull-In: Auto

MCH ODT Latency: AUTO
Write to PRE Delay (tWR): AUTO
Rank Write to Read (tWTR): AUTO
ACT to ACT Delay (tRRD): AUTO
Read to Write Delay (tRDWR): AUTO
Ranks Write to Write (tWRWR): AUTO
Ranks Read to Read (tRDRD): AUTO
Ranks Write to Read (tWRRD): AUTO
Read CAS# Precharge (tRTP): AUTO
ALL PRE to Refresh: AUTO

[eva2000]

@600Mhz 5-5-5-15 at 2.10v bios (2.04v Smartguardian)






Click image for larger screenshot

Super Pi single & dual 32M




Everest Ultimate Bandwidth



DFI LP LT X38-T2R 1/11 Official Bios Settings

PC Health Status
Adjust CPU Temp: +9

CPU Feature
- Thermal Management Control: Disabled
-  PPM(EIST) Mode: Disabled
- Limit CPUID MaxVal: Disabled
- CIE Function: Disabled
- Execute Disable Bit: Disabled
- Virtualization Technology: Disabled
- Core Multi-Processing: Enabled

Exist Setup Shutdown: Mode 2
Shutdown after AC Loss: Disabled
CLOCK VC0 divider: AUTO
CPU Clock Ratio Unlock: Enabled
CPU Clock Ratio: 9.5x
- Target CPU Clock: 3800
CPU N/2 Ratio: Enabled
CPU Clock: 400
Boot Up Clock: AUTO
DRAM Speed: 266/800
- Target DRAM Speed: 1203
PCIE Clock: 100mhz
PCIE Slot Config: 1X 1X

CPU Spread Spectrum: Disabled
PCIE Spread Spectrum: Disabled
SATA Spread Spectrum: Disabled

Voltage Settings
CPU VID Control: 1.20000v
CPU VID Special Add: AUTO
DRAM Voltage Control: 2.10v
SB Core/CPU PLL Voltage: 1.51
NB Core Voltage: 1.530
CPU VTT Voltage: 1.205
Vcore Droop Control: Enabled
Clockgen Voltage Control: 3.45v
GTL+ Buffers Strength: Strong
Host Slew Rate: Weak
GTL REF Voltage Control: Enable
x CPU GTL1/3 REF Volt: 79
x CPU GTL 0/2 REF Volt: 79
x North Bridge GTL REF Volt: 79

DRAM Timing
- Enhance Data transmitting: FAST 
- Enhance Addressing: FAST
- T2 Dispatch: Enabled 

Clock Setting Fine Delay
Ch1 Clock Crossing Setting: More Aggressive
- DIMM 1 Clock fine delay: 280
- DIMM 2 Clock fine delay: 420
- DIMM 1 Control fine delay: 560
- DIMM 2 Control fine delay: 280
- Ch 1 Command fine delay: 770

Ch2 Clock Crossing Setting: More Aggressive
- DIMM 3 Clock fine delay: 280
- DIMM 4 Clock fine delay: 420
- DIMM 3 Control fine delay: 560
- DIMM 4 Control fine delay: 280
- Ch 2 Command fine delay: 770

Ch1Ch2 CommonClock Setting: More Aggressive

Ch1 RDCAS GNT-Chip Delay: Auto
Ch1 WRCAS GNT-Chip Delay: Auto
Ch1 Command to CS Delay: Auto

Ch2 RDCAS GNT-Chip Delay: Auto
Ch2 WRCAS GNT-Chip Delay: Auto
Ch2 Command to CS Delay: Auto (where cpuz sees 1T or 2T SETTING)

CAS Latency Time (tCL): 5
RAS# to CAS# Delay (tRCD): 5
RAS# Precharge (tRP): 5
Precharge Delay (tRAS): 15
All Precharge to Act: AUTO
REF to ACT Delay (tRFC): 42
Performance LVL (Read Delay) (tRD): AUTO

Read delay phase adjust: Enter

Ch1 Read delay phase (4~0)
- Channel 1 Phase 0 Pull-In: AUTO
- Channel 1 Phase 1 Pull-In: AUTO
- Channel 1 Phase 2 Pull-In: AUTO
- Channel 1 Phase 3 Pull-In: AUTO
- Channel 1 Phase 4 Pull-In: AUTO

Ch2 Read delay phase (4~0)
- Channel 2 Phase 0 Pull-In: Auto
- Channel 2 Phase 1 Pull-In: Auto
- Channel 2 Phase 2 Pull-In: Auto
- Channel 2 Phase 3 Pull-In: Auto
- Channel 2 Phase 4 Pull-In: Auto

MCH ODT Latency: AUTO
Write to PRE Delay (tWR): AUTO
Rank Write to Read (tWTR): AUTO
ACT to ACT Delay (tRRD): AUTO
Read to Write Delay (tRDWR): AUTO
Ranks Write to Write (tWRWR): AUTO
Ranks Read to Read (tRDRD): AUTO
Ranks Write to Read (tWRRD): AUTO
Read CAS# Precharge (tRTP): AUTO
ALL PRE to Refresh: AUTO

[eva2000]

CAS4 Results

Looks like 490mhz 4-4-4-12 is the limit at 2.19v bios set vdimm. Setting CAS5 as in 5-4-4-12/15 didn't help but it could do 5-5-4-x easily at higher clocks. 2.23-2.27v vdimm allowed less memtest86+ v2.00 errors but still were a few when looping test #5.

@490Mhz 4-4-4-12 at 2.19v bios set



Super Pi single & dual 32M - Including Everest Bandwidth





DFI LP LT X38-T2R 1/11 Official Bios Settings

PC Health Status
Adjust CPU Temp: +9

CPU Feature
- Thermal Management Control: Disabled
-  PPM(EIST) Mode: Disabled
- Limit CPUID MaxVal: Disabled
- CIE Function: Disabled
- Execute Disable Bit: Disabled
- Virtualization Technology: Disabled
- Core Multi-Processing: Enabled

Exist Setup Shutdown: Mode 2
Shutdown after AC Loss: Disabled
CLOCK VC0 divider: AUTO
CPU Clock Ratio Unlock: Enabled
CPU Clock Ratio: 9.5x
- Target CPU Clock: 3102
CPU N/2 Ratio: Enabled
CPU Clock: 326
Boot Up Clock: AUTO
DRAM Speed: 266/800
- Target DRAM Speed: 980
PCIE Clock: 100mhz
PCIE Slot Config: 1X 1X

CPU Spread Spectrum: Disabled
PCIE Spread Spectrum: Disabled
SATA Spread Spectrum: Disabled

Voltage Settings
CPU VID Control: 1.1875v
CPU VID Special Add: AUTO
DRAM Voltage Control: 2.19v
SB Core/CPU PLL Voltage: 1.51
NB Core Voltage: 1.530
CPU VTT Voltage: 1.200
Vcore Droop Control: Enabled
Clockgen Voltage Control: 3.45v
GTL+ Buffers Strength: Strong
Host Slew Rate: Weak
GTL REF Voltage Control: Disable
x CPU GTL1/3 REF Volt: 110
x CPU GTL 0/2 REF Volt: 110
x North Bridge GTL REF Volt: 110

DRAM Timing
- Enhance Data transmitting: FAST 
- Enhance Addressing: FAST
- T2 Dispatch: Enabled 

Clock Setting Fine Delay
Ch1 Clock Crossing Setting: More Aggressive
- DIMM 1 Clock fine delay: 350
- DIMM 2 Clock fine delay: 560
- DIMM 1 Control fine delay: 560
- DIMM 2 Control fine delay: 420
- Ch 1 Command fine delay: 980

Ch2 Clock Crossing Setting: More Aggressive
- DIMM 3 Clock fine delay: 350
- DIMM 4 Clock fine delay: 560
- DIMM 3 Control fine delay: 560
- DIMM 4 Control fine delay: 420
- Ch 2 Command fine delay: 980

Ch1Ch2 CommonClock Setting: More Aggressive

Ch1 RDCAS GNT-Chip Delay: Auto
Ch1 WRCAS GNT-Chip Delay: Auto
Ch1 Command to CS Delay: Auto

Ch2 RDCAS GNT-Chip Delay: Auto
Ch2 WRCAS GNT-Chip Delay: Auto
Ch2 Command to CS Delay: Auto (where cpuz sees 1T or 2T SETTING)

CAS Latency Time (tCL): 4
RAS# to CAS# Delay (tRCD): 4
RAS# Precharge (tRP): 4
Precharge Delay (tRAS): 12
All Precharge to Act: AUTO
REF to ACT Delay (tRFC): 42
Performance LVL (Read Delay) (tRD): 5

Read delay phase adjust: Enter

Ch1 Read delay phase (4~0)
- Channel 1 Phase 0 Pull-In: AUTO
- Channel 1 Phase 1 Pull-In: AUTO
- Channel 1 Phase 2 Pull-In: AUTO
- Channel 1 Phase 3 Pull-In: AUTO
- Channel 1 Phase 4 Pull-In: AUTO

Ch2 Read delay phase (4~0)
- Channel 2 Phase 0 Pull-In: Auto
- Channel 2 Phase 1 Pull-In: Auto
- Channel 2 Phase 2 Pull-In: Auto
- Channel 2 Phase 3 Pull-In: Auto
- Channel 2 Phase 4 Pull-In: Auto

MCH ODT Latency: AUTO
Write to PRE Delay (tWR): AUTO
Rank Write to Read (tWTR): AUTO
ACT to ACT Delay (tRRD): AUTO
Read to Write Delay (tRDWR): AUTO
Ranks Write to Write (tWRWR): AUTO
Ranks Read to Read (tRDRD): AUTO
Ranks Write to Read (tWRRD): AUTO
Read CAS# Precharge (tRTP): AUTO
ALL PRE to Refresh: AUTO

[Eldonko]

Hmm interesting, some of those mira chips probably. How they clock cas4? It is gunna be tough to find something that will bench better than D9, low voltage stuff just cant handle the tight secondaries.

[CERO]

1200 mhz , very nice seems to be a improvement over the 8000 line

[TEDY]

we want 2x2

[CERO]

you are right I thought it was their new 2x2 , but still nice clocks for non D9.

[Dainas]

we want 2x2

I third that 2x1GB that can do this is a dime a dozen.

[Eldonko]

I think manus are getting tired of all the D9 RMAs, this is likely the solution. OCZ did the same replacement.

[EnJoY]

Very nice review Eva, you always beat me the punch!

Have you also found by any chance that these sticks don't like running less than 2.0v? I haven't done all of my testing yet, but I recall trying 1.9v at 800MHz 5-5-5 and they would not boot.

[[XC] DragonOrta]

Eva, you can probably just pull the heatspreaders right off. G.Skill only uses thermal pads, not thermal tape or glue.

I actually did that with my 8000-PQ sticks when pulling them out of my MSI Neo2-FR, as the slots are really tight for some reason. Tough to pull any of my sticks out of the MSI slots.

[eva2000]

Hmm interesting, some of those mira chips probably. How they clock cas4? It is gunna be tough to find something that will bench better than D9, low voltage stuff just cant handle the tight secondaries.

only had them for less 24hrs but will check CAS4 too

1200 mhz , very nice seems to be a improvement over the 8000 line

only Gskill PC2-8000 I tried was their 2x2GB 2GBPQ modules but definitely these 8500CL5D-2GBPK clock nicely

we want 2x2

Yeah thought i was getting their 2x2GB kit as they only mentioned 8500 part but got the 2x1GB ones heh

you are right I thought it was their new 2x2 , but still nice clocks for non D9.

Yeah interesting to see where they max out at from later testing

I third that 2x1GB that can do this is a dime a dozen.

true

I think manus are getting tired of all the D9 RMAs, this is likely the solution. OCZ did the same replacement.

Never had to RMA any Micron D9GMH/D9GKX I have benched with up to 2.45-2.6v vdimm but i run most 24/7 at 2.0-2.15v and always with active fan cooling regardless of vdimm used

Very nice review Eva, you always beat me the punch!

Have you also found by any chance that these sticks don't like running less than 2.0v? I haven't done all of my testing yet, but I recall trying 1.9v at 800MHz 5-5-5 and they would not boot.

thanks heh.. haven't tested below 2.00v bios (1.93v SG) vdimm yet, will try and see

Eva, you can probably just pull the heatspreaders right off. G.Skill only uses thermal pads, not thermal tape or glue.

I actually did that with my 8000-PQ sticks when pulling them out of my MSI Neo2-FR, as the slots are really tight for some reason. Tough to pull any of my sticks out of the MSI slots.

These modules are stuck very tight from what i can see - the contact with ICs is very firm and well been kindly asked not to take the HS off so I don't intend to unless given permission to do so - hope ya understand

[dinos22]

G.Skill makes great RAM
these ones look good so far but let's see them go high CAS4 when you get around to it

[[XC] DragonOrta]

These modules are stuck very tight from what i can see - the contact with ICs is very firm and well been kindly asked not to take the HS off so I don't intend to unless given permission to do so - hope ya understand

Absolutely. No need to burn bridges.

[EnJoY]

The spreaders came off easy on my set, but I also will not be sharing pictures or info of the chips unless permission is given.

[Spyrus]

I have read over Mushkin forums that maybe they have samsung chips.

[eva2000]

Updated 3rd post with CAS4 results so far

[dinos22]

how gay are those CAS4 results

more vdimm help?

what are the max CAS5 results?

this could be that promos or hynix stuff that doesn't like volts and kinda craps out around 1200MHz or so

[Eldonko]

Never had to RMA any Micron D9GMH/D9GKX I have benched with up to 2.45-2.6v vdimm but i run most 24/7 at 2.0-2.15v and always with active fan cooling regardless of vdimm used

You are lucky, Ive had 12Gb die, some which never saw >2.2v and always 120mm fan. Bud luck? Who knows, but low voltage mem may last longer.

Cas5 sure is the way to go on this kit huh.

[eva2000]

how gay are those CAS4 results

more vdimm help?

what are the max CAS5 results?

this could be that promos or hynix stuff that doesn't like volts and kinda craps out around 1200MHz or so

Haven't tested max CAS5 yet so far 600mhz 5-5-5-15 at 2.1v dual 32M stable. More volts only tried 2.27v max but didn't help for 500mhz 4-4-4-12, loosen tRAS didn't help. PL 6 didn't help either.

You are lucky, Ive had 12Gb die, some which never saw >2.2v and always 120mm fan. Bud luck? Who knows, but low voltage mem may last longer.

Cas5 sure is the way to go on this kit huh.

Yup CAS5 way to go.. I can probably see these ICs in everything from CAS4 PC2-6400 through to 5-5-5-15 rated PC2-8000/8500/9200/9600 later on.. sucks for the enthusiast overclocker though looking for crucial ballistix like flexibility between CAS4 vs CAS5 clocking But good for those folks wanting value. No idea how voltage effects these modules' life spans yet though I guess.

Yeah pretty lucky.. never rma'd any memory besides DOA stuff. Always put memory back in packaging if not in use never left memory lying around unprotected and always turned off pc and unplugged power before removing components like memory as well - both practices serves me well. That and a daily sacrifice to the ram gods

If this is the start for new ICs, hopefully further improvements in the process can raise the max CAS4 clocking headroom

[Counter CS]

Eva2000 i have the 2x2GB F2-8500CL5-4GBPK 8 layers KIT from G-skill.

http://www.xtremesystems.org/forums/...1&postcount=28


...

[eva2000]

Nice.. probably time for me to buy a copy of Vista Ultimate so I can test 64bit OS and >4GB memory

[Eldonko]

I just use vista basic 64, it's slow enough haha.

Good advice on mem care practices. I admit I really dont treat my hardware very well compared to that heh.

[situman]

if it is indeed Samsung, this could be the second coming of the all conquering "TCCD" chips.

[3oh6]

Yeah pretty lucky.. never rma'd any memory besides DOA stuff. Always put memory back in packaging if not in use never left memory lying around unprotected and always turned off pc and unplugged power before removing components like memory as well - both practices serves me well. That and a daily sacrifice to the ram gods

excellent advice, this is how i work as well but always just take it for granted. never had a kit just die on me or go south that wasn't a direct result of pushing too much voltage on a 32M run for the Low Clock Challenge...but that pair will stay with me forever, good old Super Talent PC2-8000 C4s, they were such a good kit to me