Ram tester - Revision history

Elizabeth: removed categories from page marked {{delete}}

2010-12-01T18:48:45Z

removed categories from page marked {{delete}}

Elizabeth: marked for deletion, to be replaced with a comprehensive, standardized doc on ram testing

2010-10-16T20:54:53Z

marked for deletion, to be replaced with a comprehensive, standardized doc on ram testing

Owenja: DDR2, DDR3

2010-06-08T23:01:41Z

DDR2, DDR3

Owenja: rewrite

2010-06-06T20:03:18Z

rewrite

Ali: categorized

2008-09-17T01:15:12Z

categorized

Matteo: update

2007-05-26T01:11:22Z

update

192.168.3.13: added ram sizing instructions

2005-08-27T18:39:34Z

added ram sizing instructions

Jeff at 23:42, 26 August 2005

2005-08-26T23:42:08Z

192.168.3.13: fixing problems

2005-08-26T19:41:10Z

fixing problems

192.168.3.13: starting the ram test page

2005-08-26T19:39:44Z

starting the ram test page

New page

To test RAM:

First, insert the ram into one of the motherboards placed on the wall. Make sure that the bumps are lined up currectly with the holes on the RAM sticks.

Then, use the consoles to switch to the correct computer.to switch from one console to the other, use the console on the bottom.

Once the computer has turned on, enter BIOS. Check the Ram amount that is listed on the main page. Make sure that it is the correct amount. Then, in the advanced area of BIOS, change the RAM type is set to the correct values (e.g. PC66 PC100 PC133, do not use any other values!) Then save and exit BIOS, often with F10.

The computer will boot up into the RAM testing program, then it will automactically start testing. The computer will have to go through two passes before the RAM test is complete. If the test is sucessful, then the RAM is good!

 
If you have any questions, ask Patrick or any other staff member.

--[[User:192.168.3.13|192.168.3.13]] 12:39, 26 Aug 2005 (PDT)

← Older revision		Revision as of 18:48, 1 December 2010
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	#* DDR1 label format: "DDR {size, MB} / {speed, MHz}", such as "DDR 256 / 266" or "DDR 512 / 400"		#* DDR1 label format: "DDR {size, MB} / {speed, MHz}", such as "DDR 256 / 266" or "DDR 512 / 400"
	#* DDR2 label format: "DDR2 {size, MB} / {speed, MHz}", such as "DDR2 256 / 533" or "DDR2 1024 / 667"		#* DDR2 label format: "DDR2 {size, MB} / {speed, MHz}", such as "DDR2 256 / 533" or "DDR2 1024 / 667"
−
−	~~[[Category:Hardware Testing]]~~
−	~~[[Category:Howto]]~~
−	~~[[Category:Advanced Testing]]~~

← Older revision		Revision as of 20:54, 16 October 2010
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		+	{{delete}}
	==Advanced Testing: RAM==		==Advanced Testing: RAM==

@@ Line 15: / Line 15: @@
 ** Speed
 *** DDR1
 **** 266 MHz, aka PC2100
 **** 333 MHz, aka PC2700
 **** 400 MHz, aka PC3200
 *** DDR2
-**** fixme
+**** 400 MHz, aka PC2-3200
 * [http://en.wikipedia.org/wiki/Sodimm SODIMMs] go directly to Laptop Build, where they will be sorted and tested
 * ECC memory goes directly to Server Build, where it will be sorted and tested

@@ Line 1: / Line 1: @@
-==To test RAM:==
+==Advanced Testing: RAM==
-# Sort RAM by size and speed
+===Sorting===
-# Insert the ram into one of the motherboards placed on the wall.
+* [http://en.wikipedia.org/wiki/SDRAM SDRAM] has a notch in the middle and a notch towards one side
-#* Check that the computer is turned off.
+** Reject if slower than 133 MHz OR smaller than 256 MB.  We're only keeping SDRAM that is at least 256 MB / 133 MHz
-#* Make sure that the bumps are lined up currectly with the holes on the RAM sticks.
+** If the size or speed is not obvious, use the SD-RAM tester by the KVM switch
-# Use the consoles to switch to the correct computer.
+* [http://en.wikipedia.org/wiki/RDRAM RDRAM] or RAMBUS ram has two notches in the middle and always has EM shielding plates
-#* To switch from one console to the other, use the console on the bottom.
+** Reject if smaller than 512 MB, otherwise put it in the store box (we no longer test RAMBUS RAM)
-# Once the computer has turned on Check the Ram amount that is listed in memcheck is the same as what you think you put in.
+** Make sure to rubberband identical pairs together
-#* The computer will boot up into the RAM testing program (memcheck), then it will automactically start testing.
+* DDR has one notch in the middle
-# The computer will have to go through three passes before the RAM test is complete.
+** [http://en.wikipedia.org/wiki/DDR_SDRAM DDR1] vs [http://en.wikipedia.org/wiki/DDR2_SDRAM DDR2]
-#* If the test is sucessful, then the RAM is good!
+*** DDR2 has a denser set of contacts compared to DDR1
-# Label the RAM and place it in the finished ram location.
+*** DDR2 will usually say something like "PC2" on the sticker
-==Identifying RAM size and speed==
+For RAMBUS and DDR, the speed and size are nearly always put clearly on a sticker on the ram.  If it doesn't have one, you can try searching for the model number online, or you can plug it into a machine to find out.  When you do find out, label it BEFORE testing.
-Of course, to test ram, you have to know how big it is and what size it is.
+For SDRAM, there are many considerations.  You will often find that it will list the speed and not the size.  In some of those cases, you can look for the size cryptically written as <code>4x64</code>.  In these cases, the actual size is as follows:
-First, find out what kind of ram it is (assuming DIMMs):
+If the speed isn't listed, it is probably 66MHz, but not always.
-For RDR and DDR, the speed and size are nearly always put clearly on a sticker on the ram.  If it doesn't have one, you will have to plug it into a machine to find out.
+Parity and ECC SDRAM are weird.
-For SDRAM, there are many considerations.  You will often find that it will list the speed and not the size.  In some of those cases, you can look for the size cryptically written as <code>4x64</code>.  In these cases, the actual size is as follows:
+===Testing===
-If the speed isn't listed, it is probly 66MHz, but not always.
+# Switch the KVM console to the correct motherboard.
+# Ensure that the motherboard with which you want to test the memory is switched off at the power supply.
-Parity and ECC SDRAM are weird.
+# Insert the ram into one of the motherboards placed on the wall.
 [[Category:Hardware Testing]]
 [[Category:Howto]]
 [[Category:Advanced Testing]]

← Older revision		Revision as of 01:15, 17 September 2008
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	[[Category:Hardware Testing]]		[[Category:Hardware Testing]]
	[[Category:Howto]]		[[Category:Howto]]
		+	[[Category:Advanced Testing]]

← Older revision		Revision as of 23:42, 26 August 2005
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	<br>		<br>
	--[[User:Inhuman\|Inhuman]] 12:39, 26 Aug 2005 (PDT)		--[[User:Inhuman\|Inhuman]] 12:39, 26 Aug 2005 (PDT)
		+
		+	[[Category:Hardware Testing]]
		+	[[Category:Howto]]

@@ Line 1: / Line 1: @@
 To test RAM:
-<p>
+<br>
 First, insert the ram into one of the motherboards placed on the wall. Make sure that the bumps are lined up currectly with the holes on the RAM sticks.
-<p>
+<br>
 Then, use the consoles to switch to the correct computer.to switch from one console to the other, use the console on the bottom.
-<p>
+<br>
 Once the computer has turned on, enter BIOS. Check the Ram amount that is listed on the main page. Make sure that it is the correct amount. Then, in the advanced area of BIOS, change the RAM type is set to the correct values (e.g. PC66 PC100 PC133, do not use any other values!) Then save and exit BIOS, often with F10.
-<p>
+<br>
 The computer will boot up into the RAM testing program, then it will automactically start testing. The computer will have to go through two passes before the RAM test is complete. If the test is sucessful, then the RAM is good!
-<p>
+<br>
 <br>
 If you have any questions, ask Patrick or any other staff member.
-<p>
+<br>
---[[User:192.168.3.13|192.168.3.13]] 12:39, 26 Aug 2005 (PDT)
+<br>