Which is best ddr2 or ddr3

[Geobuzby]

Hi i have a Gigabyte P35C-DS3R which has 4 DDR2 slots and 2 DDR3 slots,atm i have 6gig of pc2-6400 installed(2x2gig 2x1gig) but thinking of upgrading to DDR3 PC3-10600 4gig,Which would work out best? my cpu is a Q6600 running at 3.0mhz fsb 1333,My manaul says it will run "2x 1.5v DDR3 DIMM sockets supporting up to 4gb of system memory" or 4x DDR2 8gig,dose that mean each ddr3 will run 4 gig each or 4gig total?
What would be my best option any help would be great,
Thanks.
Edit just read this so im going to try 8gig in ddr3 http://www.tomshardware.co.uk/forum/286058-30-gigabyte-p35c-ds3r-ddr3

 

[Geobuzby]

Can anyone help me with mt current ram timings? with this info?
Memory SPD
DIMM # 1
SMBus address 0x50
Memory type DDR2
Module format Regular UDIMM
Manufacturer (ID) Micron Technology (2C00000000000000)
Size 2048 MBytes
Max bandwidth PC2-6400 (400 MHz)
Part number 16HTF25664AZ-800H1
Serial number 380F82C2
Manufacturing date Week 18/Year 12
Number of banks 2
Data width 64 bits
Correction None
Nominal Voltage 1.80 Volts
EPP no
XMP no
AMP yes
JEDEC timings table CL-tRCD-tRP-tRAS-tRC @ frequency
JEDEC #1 4.0-4-4-12-16 @ 266 MHz
JEDEC #2 5.0-5-5-15-20 @ 333 MHz
JEDEC #3 6.0-6-6-18-24 @ 400 MHz
AMP profile
Min Cycle time 1.#IO ns (0 MHz)
Max CL -2147483648.0
Min tRP 1.#J ns
Min tRCD 1.#J ns
Min tRAS 1.#J ns
Min tRFC -1.#J ns
AMP timings table CL-tRCD-tRP-tRAS-tRC @ frequency
AMP #1 -2147483648.0--2147483648--2147483648--2147483648--2147483648 @ 0 MHz

DIMM # 2
SMBus address 0x51
Memory type DDR2
Module format Regular UDIMM
Manufacturer (ID) Micron Technology (2C00000000000000)
Size 2048 MBytes
Max bandwidth PC2-6400 (400 MHz)
Part number 16HTF25664AZ-800H1
Serial number 380F82E2
Manufacturing date Week 18/Year 12
Number of banks 2
Data width 64 bits
Correction None
Nominal Voltage 1.80 Volts
EPP no
XMP no
AMP yes
JEDEC timings table CL-tRCD-tRP-tRAS-tRC @ frequency
JEDEC #1 4.0-4-4-12-16 @ 266 MHz
JEDEC #2 5.0-5-5-15-20 @ 333 MHz
JEDEC #3 6.0-6-6-18-24 @ 400 MHz
AMP profile
Min Cycle time 1.#IO ns (0 MHz)
Max CL -2147483648.0
Min tRP 1.#J ns
Min tRCD 1.#J ns
Min tRAS 1.#J ns
Min tRFC -1.#J ns
AMP timings table CL-tRCD-tRP-tRAS-tRC @ frequency
AMP #1 -2147483648.0--2147483648--2147483648--2147483648--2147483648 @ 0 MHz

DIMM # 3
SMBus address 0x52
Memory type DDR2
Module format Regular UDIMM
Manufacturer (ID) Samsung (CE00000000000000)
Size 1024 MBytes
Max bandwidth PC2-6400 (400 MHz)
Part number M3 78T2863QZS-CF7
Serial number 925DB2C3
Manufacturing date Week 07/Year 09
Number of banks 1
Data width 64 bits
Correction None
Nominal Voltage 1.80 Volts
EPP no
XMP no
AMP yes
JEDEC timings table CL-tRCD-tRP-tRAS-tRC @ frequency
JEDEC #1 4.0-4-4-12-16 @ 266 MHz
JEDEC #2 5.0-5-5-15-20 @ 333 MHz
JEDEC #3 6.0-6-6-18-24 @ 400 MHz
AMP profile
Min Cycle time 1.#IO ns (0 MHz)
Max CL -2147483648.0
Min tRP 1.#J ns
Min tRCD 1.#J ns
Min tRAS 1.#J ns
Min tRFC 1.#J ns
AMP timings table CL-tRCD-tRP-tRAS-tRC @ frequency
AMP #1 -2147483648.0--2147483648--2147483648--2147483648--2147483648 @ 0 MHz

DIMM # 4
SMBus address 0x53
Memory type DDR2
Module format Regular UDIMM
Manufacturer (ID) Samsung (CE00000000000000)
Size 1024 MBytes
Max bandwidth PC2-6400 (400 MHz)
Part number M3 78T2863QZS-CF7
Serial number 925DB20E
Manufacturing date Week 07/Year 09
Number of banks 1
Data width 64 bits
Correction None
Nominal Voltage 1.80 Volts
EPP no
XMP no
AMP yes
JEDEC timings table CL-tRCD-tRP-tRAS-tRC @ frequency
JEDEC #1 4.0-4-4-12-16 @ 266 MHz
JEDEC #2 5.0-5-5-15-20 @ 333 MHz
JEDEC #3 6.0-6-6-18-24 @ 400 MHz
AMP profile
Min Cycle time 1.#IO ns (0 MHz)
Max CL -2147483648.0
Min tRP 1.#J ns
Min tRCD 1.#J ns
Min tRAS 1.#J ns
Min tRFC 1.#J ns
AMP timings table CL-tRCD-tRP-tRAS-tRC @ frequency
AMP #1 -2147483648.0--2147483648--2147483648--2147483648--2147483648 @ 0 MHz

 

[MattNo5ss]

The only difference between DDR2 and DDR3 is that DDR3 uses less voltage and can reach higher speeds. Your board can max at either 4x2GB DDR2 sticks for 8GB total or 2x2GB DDR3 sticks for 4GB total.

If your Q6600 is at 3.0GHz, then that means you are running 333.3MHz actual FSB (1333MHz effective). Since DDR is Double Data Rate, the minimum speed you'll want to have is DDR2 or DDR3 667MHz since it's actual speed is 333.3MHz (that's with a 1:1 FSB:RAM ratio).

You can use either DDR2 or DDR3 and probably won't notice a difference between DDR2-800 and DDR3-1333. So, if you don't need more than 4GB of RAM, then go with the DDR3. If you do need more, then use your 6GB DDR2.

DDR3-1333 will work fine with the 1:2 FSB:RAM ratio, and DDR2-800 would work with a 5:6 FSB:RAM ratio. I'm not sure what ratio options are available to you.

For your DDR2-800 timings, just use what the JEDEC #3 shows: 6-6-6-18 with 1.8v. Those speeds, timings, and voltage match all of your sticks.

 

[Geobuzby]

Thank you MattNo5ss so if i understand right change my spd bios setting from auto to manual and put in 6-6-6-18 1.8v, Atm cpuid shows Dram fr-499.5,..,FSBdram2.3,..,6-8-8-23-64clocks CR-2T ,,that info is going down the list on cpuid memory tab..

 

[MattNo5ss]

Yes, you'll need to make these changes manually in the BIOS. Do you have CPU-Z screenshots of the CPU, SPD, and Memory tabs you can post?

From your post, it sounds like your RAM is running at DDR2-1000 6-8-8-23 with a 2:3 FSB:RAM ratio. If that's the case, then you'll probably want to change that ratio to 5:6 so that the RAM will be running at DDR2-800 (400MHz). Unless you know for sure your RAM can run stable at DDR2-1000 (500MHz).

 

[Geobuzby]

not sure how to screen shot them? i know how to prtscn but its to small to see,cpuid HW says DDR is 2.08v

 

[Geobuzby]

dont want to burn my ram out,the bios set it when i oc'd the cpu ,only tested by playing sniper V2 which was fine,towers been on for about 48 hrs so far,I wouldnt have a clue if the ram is ok at 500.

 

[MattNo5ss]

You can use the sniping tool in Windows 7 (very easy) or hit the PrtScn button on the keyboard (which copies the screen) and then paste it into MS Paint then save the pic.

 

[Geobuzby]

this is to small tho no? il put all tabs on the one pic yea?

 

[MattNo5ss]

I fixed the image for you

Yeah, I would lower the speed to its rated 400MHz in addition to setting the timings and voltage manually.

 

[Geobuzby]

Im going to shut down and try work out the settings in my bios,Thanks for your advice and help Matt so i need 400mhz and 6-6-6-18 with 1.8v?

 

[MattNo5ss]

Yeah, those are what you need. The RAM speed could look different ways depending on the BIOS: either 400MHz, DDR2-800, or 5:6 ratio. Those are all the same when running 333MHz (1333MHz) FSB.

 

[Geobuzby]

Thank you for your help,I had to change my SPD settings in bios to 2.50(which was lowest setting) to get 800-833mhz,sorry about pic size again,looks all good me me now? Cheers again

 

[MattNo5ss]

Yep, that's it

 

[MongGrel]

It's great to see people stopping by still these days and get help, I was a lurker for years