• Welcome to TechPowerUp Forums, Guest! Please check out our forum guidelines for info related to our community.

RAM question

Joined
Nov 29, 2007
Messages
979 (0.16/day)
Location
Netherlands
If i add an 667mhz 1GB ddr2 stick to a pair of 1gb 800mhz would it become slower or faster?
And can you still run dual channel?
 
Joined
Mar 30, 2007
Messages
536 (0.09/day)
Location
USA
If i add an 667mhz 1GB ddr2 stick to a pair of 1gb 800mhz would it become slower or faster?
And can you still run dual channel?

The best performance is achieved by placing matching DIMMs ...same speed, same density, same manufacturer.

Your system may struggle with that setup. You never know if you try though...
 
Joined
Jul 18, 2007
Messages
1,172 (0.19/day)
Location
UK
Processor Intel Core 2 Duo E7200 3.40GHz (400x8.5)
Motherboard Gigabyte GA-EP45-UD3P Rev 1.1
Cooling Xigmatek HDT-S1283
Memory 2x Crucial Ballistix DDR2 2GB 4:5 @ 500MHz 5-5-5-15
Video Card(s) Asus GTX 560Ti 1GB TOP Edition
Storage Crucial M4 128GB SSD + WD Black 500GB WD5001AALS
Display(s) Samsung P2370HD @ 1920x1080 60Hz
Case Antec 300
Audio Device(s) Soundblaster Live! 24-bit w/ Creative Inspire T6060 5.1 200W
Power Supply CoolerMaster Silent Pro Gold 600w
Software Windows 7 Professional Edition SP1 64-bit
whats your fsb atm?
 
Joined
Jul 18, 2007
Messages
1,172 (0.19/day)
Location
UK
Processor Intel Core 2 Duo E7200 3.40GHz (400x8.5)
Motherboard Gigabyte GA-EP45-UD3P Rev 1.1
Cooling Xigmatek HDT-S1283
Memory 2x Crucial Ballistix DDR2 2GB 4:5 @ 500MHz 5-5-5-15
Video Card(s) Asus GTX 560Ti 1GB TOP Edition
Storage Crucial M4 128GB SSD + WD Black 500GB WD5001AALS
Display(s) Samsung P2370HD @ 1920x1080 60Hz
Case Antec 300
Audio Device(s) Soundblaster Live! 24-bit w/ Creative Inspire T6060 5.1 200W
Power Supply CoolerMaster Silent Pro Gold 600w
Software Windows 7 Professional Edition SP1 64-bit
in that case i assume your mobo will have changed the fsb:ram ratio to 2:1, 200 fsb : 400 ram (800mhz effective)

installing 667mhz ram will spoil this ratio and your mobo will have to run ram at the lowest clocked stick, so 667mhz. in this case i think your ratio will turn 1:1 so yes your comp will run slower than what its at now

ive not explained very well but i hope you get the jist of it!
 

btarunr

Editor & Senior Moderator
Staff member
Joined
Oct 9, 2007
Messages
46,283 (7.69/day)
Location
Hyderabad, India
System Name RBMK-1000
Processor AMD Ryzen 7 5700G
Motherboard ASUS ROG Strix B450-E Gaming
Cooling DeepCool Gammax L240 V2
Memory 2x 8GB G.Skill Sniper X
Video Card(s) Palit GeForce RTX 2080 SUPER GameRock
Storage Western Digital Black NVMe 512GB
Display(s) BenQ 1440p 60 Hz 27-inch
Case Corsair Carbide 100R
Audio Device(s) ASUS SupremeFX S1220A
Power Supply Cooler Master MWE Gold 650W
Mouse ASUS ROG Strix Impact
Keyboard Gamdias Hermes E2
Software Windows 11 Pro
Simple, they will both run at 667 MHz by default, will have a reduced/altered refresh rate and timings. Faster module + slower module = slower module's parameters followed. Unless of course you OC, which again could be limited.
 
Joined
Nov 29, 2007
Messages
979 (0.16/day)
Location
Netherlands
then i leave it like this:)
thanks for the help im a really big noob with ram.
 
Joined
Jul 18, 2007
Messages
1,172 (0.19/day)
Location
UK
Processor Intel Core 2 Duo E7200 3.40GHz (400x8.5)
Motherboard Gigabyte GA-EP45-UD3P Rev 1.1
Cooling Xigmatek HDT-S1283
Memory 2x Crucial Ballistix DDR2 2GB 4:5 @ 500MHz 5-5-5-15
Video Card(s) Asus GTX 560Ti 1GB TOP Edition
Storage Crucial M4 128GB SSD + WD Black 500GB WD5001AALS
Display(s) Samsung P2370HD @ 1920x1080 60Hz
Case Antec 300
Audio Device(s) Soundblaster Live! 24-bit w/ Creative Inspire T6060 5.1 200W
Power Supply CoolerMaster Silent Pro Gold 600w
Software Windows 7 Professional Edition SP1 64-bit
then i leave it like this:)
thanks for the help im a really big noob with ram.

no worries, so was i once upon a time. just read up about things like this and experiment, thats how i learnt
 

BullGod

New Member
Joined
Nov 3, 2007
Messages
412 (0.07/day)
Location
Medias City
then i leave it like this:)
thanks for the help im a really big noob with ram.

You could try to OC it to 800mhz but you will still loose the dual channel. From my experience is not good to have a shitty RAM stick along with good ones. It bugs the system.
 
Joined
Mar 27, 2007
Messages
2,753 (0.44/day)
Location
louisiana
Processor Intel Core i7-4790 Haswell Quad-Core 3.6GHz LGA 1150 84W
Motherboard GIGABYTE GA-H87-D3H LGA 1150 Intel H87 HDMI
Cooling CPU - Cooler Master Hyper T4 / Case - cooler master 120mm rear case fan (Air cooling)
Memory 32GB (4 x 8GB) 240-Pin DDR3 SDRAM DDR3 1600 (PC3 12800)
Video Card(s) GTX1060 6GB
Storage Samsung 512 GB 840 PRO SSD Main Drive and Samsung 512 GB 840 EVO SSD Backup Drive
Display(s) ASUS 23" LED Monitor
Case COOLER MASTER Centurion 5 (silver & black)
Audio Device(s) (onboard audio) Realtek ALC892
Power Supply CORSAIR SU-750TX 750W ATX12V / EPS12V
Software Windows 10 Home Premium 64bit Edition
short answer is it runs only as fast as the slowest ram so adding 667 to your 800 makes it all run 667 speed. after that if you overclock your max will be the max point of that slower 667 speed because it limits you.
 
Joined
Nov 29, 2007
Messages
979 (0.16/day)
Location
Netherlands
nah cant oc its a cheapo from pqi it would explode like a nuke:p
 
Top