Tema: oC Opty 146

Hola chicos.

Pues vuelta a la carga, dejé atrás mi S.754. Y me he echo con un Opteron 146 939.
En una ASUS A8R32-MVP.
Y las que ya tenia las G.Skill GBZX.

Bueno pues he estado trasteando y he sacado esto:


Las memorias me han llegado con V.1'75, hasta 250Mhz. Y no se si seré capaz de subirlas mas, espero que me deis algun consejito.

El micro, ha llegado hasta 275FSB, y he tenido que bajar el HTT a 800, se pasaba mucho de 1000. Pero no he tocado voltajes, está a 1'35V en Bios. Pero en CPU-Z marca mas.

TOtal, he subido hasta 270FSB y con un divisor a las memos, se han puesto en casi el tope, que he dado.

Puedo subir mas?¿ Que le hacemos chicos?¿ Puedo dar mas caña a las memos?¿

Aun puedes subir mas, subiendo el vcore poco a poco y no pasandote con las memorias podrias dejarlo en 3ghz para siempre. Pero eso depende del vcore que necesites. Si te permite los 3ghz con vcore 1,65 y con unas buenas temperaturas... yo lo dejaria ahi.

S4LU2.

Esa placa, con chipset ATI, no tiene problemas para manejar HTT de + de 1000MHz así que por ahí no te preocupes.

Luego, según el steping del micro podrás llegar hasta +3GHz (300x10), aunque esa placa tb es capaz de los 320MHz, por lo que seguramente lo que te limite sea el micro, como no tenga buen estepping.

Si la verdad que de la placa no me quejo para nada, está respondiendo bastante bien.

Ahora voy a por las memorias, pero claro, están a 1'75V que pone maximo G.Skill en su página.
Se puede subir mas el Voltaje de estas?¿ Y así sin cambiar el divisor, lo intento subir hasta 3Gz.

El Steeping de este no es el bueno bueno, es ->
OSA146DAA5BN
CAB2E 0546GPAW
1366064K51006

Y he leido que llega a 3Gz pero ahi que meterle bastanbe Voltaje, y esta placa, el inconveniente que tiene es que el Vcore maximo es 1'450V.
Alguna idea?¿

Salu2.

Si, aquí lo ponen a 3,4GHz, con 1,8vCore cambio de fase.

Yo trataría las cosas paso por paso, primero ver a donde llega el micro, con divisores en las memos. Y luego iría a ver donde te llegan las memos con menos divisor, cambiando timings y voltajes.

Aunque yo no me pasaría con el vDimm sin buena refrigeración para las memos.

Ya, la refrigeración pues ya sabes, los coolers que lleva G.Skill na mas, podria ponerle un venti de 8cm dandoles aire. Pero para ganar 20Mhz mas, no tengo muchas ganas.

En el tema del micro y su Vcore, es que no puedo subirlo mas de 1'450V, no se hasta donde me dejará.

Que timmings puedo poner JotioComomola, para seguir subiendo las memos a 2'75V?¿
Ya has visto los que puse yo, pero tu sabes mas, que lo se jejeje.

Salu2.

Los timings son a base de ensayo y error. Para tener un poco de orientación, pasate por este link donde explican el significado de cada timing y si vale la pena subir/bajar y cuales son los incrementos recomendados:

(...) como no encuentro el enlace te lo corto y pego de mis archivos secretos...

Memory Timings

The Big 5

Most motherboard had manual adjustments for “The Big 5” memory timings. These are
CAS Latency (tCL)
RAS-to-CAS Delay (tRCD)
RAS Precharge (Trp) (AKA: Row Precharge)
Act-to-Precharge Delay (tRAS) (AKA: Min Ras# Active Time)
Command-Per-Clock (CPC) (AKA: Command Rate)

The first 4 are typically publicly specified by Ram manufactures in the order listed. For Example,:
OCZ Gold BH-5 is Specified at PC3200 with Timings of 2-2-2-8. tCL, tRCD, and tRP are all “2” and Tras is “8”
OCZ Value (VX) is specified at 2.5-3-3-7. tCL-2.5, Trcd-3, Trp-3, Tras-7 (But we all should know by now those are just a starting point)

CPC will be covered in depth in the next section.

What do the “big 5” settings do and what are their effects on Speed/Bandwidth?

tCL: CAS controls the amount of time between receiving a command and acting on that command.
Typical Settings: 2,2.5,3
Effects: Large Effect on Bandwidth and Stability
NOTE: BH5/BH6 typically will NOT run at anything higher than 2

tRCD: tRCD is the cycle time between the first stage in memory access, the row strobe, and the second stage.
Typical Settings: 2,3,4,5
Effects: Medium Effect on Bandwidth and Large effect on Stability

tRP: tRP is the amount of time it takes for memory to terminate the access in one row and begin another.
Typical Settings: 2,3,4,5
Effects: Medium Effect on Bandwidth, Large effect on Stability
tRAS: tRAS is the time between receiving a request for data electronically on the pins of a memory module and then initiating RAS to start the actual retrieval of data.
Typical Settings: 5,6,7,8,9,10
Effects: Minimal Effect on Bandwidth, Medium effect on Stability

CPC: This is the delay between when a IC is selected and the time commands can be issued to the IC. The more chips on a module (Single vs. double sided) the more difficult it is for the memory controller to do this in 1 command clock. Most quality modules with an A64 Processor can do 1T rates on 256 and 512mb modules. 2T can increase your overclock but at a substantial loss in bandwidth.
Typical Settings: 1T,2T
Effects: Large effect on Bandwidth, Medium effect on Overclocking

Extended memory settings

These settings are found on DFI Nforce3/4 boards and many of them can be found in bios’ from other manufacturers as well. Exact definitions are rather hard to find, but I’ve found lots of references to these timings as well as done extensive testing with A64 Tweaker to be able to report these findings.

Row Cycle Time (tRC)
Typical Settings: 7-14
Effects: Large Influence on Bandwidth/Stability.

Row Refresh cycle time (tRFC)
Typical Settings:11-17
This timing is usually always set to 2-4 clocks higher that the tRC.
Effects: Large Influence on Bandwidth/Stability.

Row to Row Delay(also called Ras to Ras delay)(tRRD)
Typical Setting:0-4
Effects: Slight Influence on Bandwidth/Stability.

Write Recovery Time (tWR)
Typical Settings: 2, 3
Effect: Minimal Influence on Bandwidth/Stability.

Write to read Delay (tWTR)=
Typical Setting: 1, 2.
Effect: Minimal Influence on Bandwidth/ Stability.

Read to Write delay (tRTW)
Typical Settings1-4
Effects: Minimal Influence on Bandwidth/Stability.

Write CAS# Latency (tWCL)
Typical Setting:AUTO/1
Note from RGone of DFI: Note from RGone of DFI-Street.com Posts with AUTO,1 or 5 in setting works on my board with “any” brand or size and speed of memory!
Effect: Large Influence on Stability.

DQS skew Control
Settings: Auto, Increase Skew, Decrease Skew.
Effects: Increase for performance, and Decrease for Stability,
Minimal Influence on Bandwidth/Stability.

DQS Skew Value*= 0-255 in 1.0 increments. This is the value that is Increased or Decrease when you set the DQS skew control. I typically run 125 Increase on my BH-5

DRAM Drive Strength
Typical Settings: Level 1-4
Effects: Level 1 should be run with CPC Enables, I had instability with anything else Some People others have had success w/ using level 2-4 if CPC is disabled(2T).
Large Influence on Stability.

Max Async. Latency
Typical Setting: 5.0-10.0 (7.0 netted the best results on my BH-5)
Effects: Minimal Influence on Bandwidth/Stability.
***8-9 may help increase stability when using HTT speeds of 300+

Read Preamble time
Typical Setting: 4.0-7.0 (5.5 netted the best results on my BH-5)
Effects: Minimal Influence on Bandwidth/Stability.
***5.5-7 may help increase stability when using HTT speeds of 300+

Idle Cycle Limit 000-256 in doubled increments.
Minimal Influence on Bandwidth/Stability.

Dynamic Counter
Typical Setting: Auto, Enable, Disable. Enable for Slight Performance increase, Disable for slight Stability increase
Minimal Influence on Bandwidth/Stability.

Refresh Period (tREF)
Typical Setting: AUTO/0032-4708 in variable increments.
Typical translations: Some motherboards have more options than listed here, but I have not found what they us values are for the addition settings so they are not included.

---------------------
0388= 100mhz(15.6us)
0516= 133mhz(15.6us)
0648= 166mhz(15.6us)
0780= 200mhz(15.6us)
---------------------
0908= 100mhz(7.8us)
1032= 133mhz(7.8us)
1168= 166mhz(7.8us)
0016= 200mhz(7.8us)
---------------------
1536= 100mhz(3.9us)
2048= 133mhz(3.9us)
2560= 166mhz(3.9us)
3072= 200mhz(3.9us)
---------------------
3684= 100mhz(1.95us)
4196= 133mhz(1.95us)
4708= 166mhz(1.95us)
0128= 200mhz(1.95us)

I’ve found 3.9us to be the best setting for my BH-5, 15.6 results in slightly lower bandwidth, but the same stability it seems.
Effects: Minimal effect of Bandwidth, Minimal to Extreme effect of stability
**Make SURE your tREF setting is set to a value related to your memory Divider! Extreme system instability will result if this is not matched up!

When using the DFI Specific dividers I’ve left this on “AUTO” , Once I finish deciphering the settings, I will add to the list.


R/W Queue Bypass
Typical Setting: 8x, 16x.
Minimal Influence on Bandwidth/Stability (Lower slightly increases stability).

Bypass Max
Typical Setting: 4x-7x
5x-7x for max performance,0x-4x has shown to increase overclock slightly
Minimal Influence on Bandwidth/Stability.

32 byte Granulation
Typical Setting: Disable (8burst), enable (4burst).
Effect: Try Disable (8burst) for more bandwidth. Try enabling 4 burst for more stability
Minimal Influence on Bandwidth.