How to know if your RAM is cas 2 or 3?
- Thread starter 9lives
- Start date
It should say on your Ram chips. 3-3-3 as opposed to 2-2-2 respectively (or combinations thereof).
nornally we don't see that in SIngapore. There is no marking at all. Whether kingston or crucial.
Set the Cas settings to 2 in your BIOS. If your computer posts and runs error free, leave it like that. If you start getting errors, try different combinations like 3-2-2 or 2-3-2. If either of those fail, your RAM is probably Cas3.
Hey, keep your sense of humour!
You can use Sisoft Sandra or Motherboard Monitor to read info about your RAM modules if they are installed. If they aren't installed, read the codes off the chips and look up the specs at the manufacturer's website. Also, try searching the forums for similar questions.
Good luck.
You can use Sisoft Sandra or Motherboard Monitor to read info about your RAM modules if they are installed. If they aren't installed, read the codes off the chips and look up the specs at the manufacturer's website. Also, try searching the forums for similar questions.
Good luck.
9lives,
CAS stands for Column address strobe, which is the signal that tells the DRAM to accept the given address as a column address. It is used with RAS and a row address to select a bit within the DRAM.
CL or CAS Latency is the amount of time in nanoseconds or clock cycles between a request to read the memory, and when it is actually output. SDRAMs are typically referred to as CL2 or CL3, with CL2 parts being faster.
The user, i.e. you, selects the CL in the motherboard BIOS. If the SDRAM is fast enough, it will run stable in CL2. Most of today's SDRAM comes with a EEPROM call SDP (Serial Presence Detect). The SDRAM module manufacturer load the timing information into this SPD ROM. The user can allow the motherboard to read the SPD and set the timing or CL accordingly. The user override the SPD settings when he wants to overclock.
Therefore, the user can find out what the SPD timing recommendation is by allowing the SPD to set the CAS Latency. Some manufacturer, such as KingMax, publishes the SPD content in their specification sheet. There are also utility program that dump the SPD contect. SANDRA's commercial version comes with a SPD read module, SPDINFO.EXE.
<< However, the manufacturer's SPD timing does not necessarily represent the SDRAM's true speed. For example, Crucial rates their SDRAM using 7.5 ns chips as PC-133/CL2. The Crucial has no overclock margin and most user cannot run much above 140 FSB. On the other hand, the Infineon PC-133/CL3 SDRAM also uses 7.5 ns chips and many users have reported running stable at 150 FSB @ CL2 and faster. >>
CAS stands for Column address strobe, which is the signal that tells the DRAM to accept the given address as a column address. It is used with RAS and a row address to select a bit within the DRAM.
CL or CAS Latency is the amount of time in nanoseconds or clock cycles between a request to read the memory, and when it is actually output. SDRAMs are typically referred to as CL2 or CL3, with CL2 parts being faster.
The user, i.e. you, selects the CL in the motherboard BIOS. If the SDRAM is fast enough, it will run stable in CL2. Most of today's SDRAM comes with a EEPROM call SDP (Serial Presence Detect). The SDRAM module manufacturer load the timing information into this SPD ROM. The user can allow the motherboard to read the SPD and set the timing or CL accordingly. The user override the SPD settings when he wants to overclock.
Therefore, the user can find out what the SPD timing recommendation is by allowing the SPD to set the CAS Latency. Some manufacturer, such as KingMax, publishes the SPD content in their specification sheet. There are also utility program that dump the SPD contect. SANDRA's commercial version comes with a SPD read module, SPDINFO.EXE.
<< However, the manufacturer's SPD timing does not necessarily represent the SDRAM's true speed. For example, Crucial rates their SDRAM using 7.5 ns chips as PC-133/CL2. The Crucial has no overclock margin and most user cannot run much above 140 FSB. On the other hand, the Infineon PC-133/CL3 SDRAM also uses 7.5 ns chips and many users have reported running stable at 150 FSB @ CL2 and faster. >>
TRENDING THREADS
-
Discussion Zen 5 Speculation (EPYC Turin and Strix Point/Granite Ridge - Ryzen 9000)- Started by DisEnchantment
- Replies: 25K
-
Discussion Intel Meteor, Arrow, Lunar & Panther Lakes + WCL Discussion Threads
- Started by Tigerick
- Replies: 23K
-
Discussion Intel current and future Lakes & Rapids thread- Started by TheF34RChannel
- Replies: 23K
-
-
Facebook
Twitter