Solved WARNING: Hardware noob! What does this odd thing actually do!

Unless you are a dedicated and experienced overclocker, RAM is the last thing you want to get cute with. It can be very cranky. The compatibility between a given motherboard and RAM can be very touchy. That's why motherboard manufacturers often have a certified RAM compatibility list.

I gather you have no intention of overclocking your RAM.

In that case, get the lowest priced 1.8 volt package in the size you need on the Crucial confirmed compatibility list and be done with it. That configurator is highly reliable and Crucial is a high quality brand. No need for you to get into the Ballistix product line.

The chances of you noticing any difference if you were to get RAM with faster timings is about zero.

Thank you!

Nearly done! Which one is better (I have got to choose one of them, and I would rather you rolled a die than I!)

DDR2 PC2-6400: CL=6
DDR2 PC2-5300: CL=5

The price is the same. Top one?

Thanks again, all!
 

My Computer My Computer

At a glance

Vista Home Premium x86 SP2Intel Core 2 Quad Q9300 2.50GHz4 gb (DDR2 800) 400MHzATI Radeon HD 3870 (512 MBytes)
Computer Manufacturer/Model Number
Dell XPS 420
OS
Vista Home Premium x86 SP2
CPU
Intel Core 2 Quad Q9300 2.50GHz
Motherboard
Stock Dell 0TP406
Memory
4 gb (DDR2 800) 400MHz
Graphics Card(s)
ATI Radeon HD 3870 (512 MBytes)
Monitor(s) Displays
1 x Dell 2007FP and 1 x (old) Sonic flat screen
Screen Resolution
1600 x 1200 and 1280 x 1204
Hard Drives
1 x 640Gb (SATA 300) Western Digital: WDC WD6400AAKS-75A7B0 1 x 1Tb (SATA 600) Western Digital: Caviar Black, SATA 6GB/S, 64Mb cache, 8ms Western Digital: WDC WD1002FAEX-00Z3A0 ATA Device
Case
Dell XPS 420
Cooling
Stock Fan
Keyboard
Dell Bluetooth
Mouse
Advent Optical ADE-WG01 (colour change light up)
Internet Speed
Varies from 10kb/s to 170kb/s. So unreliable it is not funny
Other Info
ASUS USB 3.0 5Gbps/SATA 6Gbps - PCI-Express Combo Controller Card (U3S6)
The RAMmon report you ran says you now have PC 6400 running at 1.8 volts

Get more of that.

Therefore: the first of the two on your list: DDR2 PC2-6400: CL=6

I am taking your word for it that the RAMmon test is accurate and that you have properly used the Crucial configurator.
 

My Computer My Computer

At a glance

Windows 7 Home Premium SP1, 64-bitIntel Skylake i5-6600K, not overclocked8 GB HyperX DDR4-2666 (2 x 4 GB)none; graphics are integrated on CPU
Computer type
PC/Desktop
Computer Manufacturer/Model Number
Ignatz Special; 4 speed manual gearbox; factory air conditioning; one of one
OS
Windows 7 Home Premium SP1, 64-bit
CPU
Intel Skylake i5-6600K, not overclocked
Motherboard
AsRock Z170M Extreme 4, micro ATX
Memory
8 GB HyperX DDR4-2666 (2 x 4 GB)
Graphics Card(s)
none; graphics are integrated on CPU
Sound Card
onboard: Realtek ALC1150; external: USB Behringer UF0-202
Monitor(s) Displays
Dell S2340M 23 inch IPS
Screen Resolution
1600 x 900
Hard Drives
System: Crucial MX100 series SSD, 128 GB;
Data: Samsung Spinpoint 103SJ, 1 TB;
Backup: WD Caviar Green WD30EZRX-00D8PB0, 3 TB
PSU
Rosewill SilentNight 500 watt fanless, semi-modular
Case
Antec Solo II
Cooling
Noctua NH-U12S; Noctua F12 intake, Noctua S12A exhaust
Keyboard
Microsoft 200 6JH-00001 USB
Mouse
Dell or Microsoft optical wired; USB
Antivirus
Microsoft Security Essentials and Malwarebytes Premium
Browser
Pale Moon
Other Info
All fans PWM; speeds at idle: CPU circa 500 rpm; intake circa 600 rpm; exhaust circa 600 rpm; CPU temps 27 idle and 47 C load in a warm room (27 C/81 F) when running Intel Extreme Tuning Utility stress test.
The RAMmon report you ran says you now have PC 6400 running at 1.8 volts

Get more of that.

Therefore: the first of the two on your list: DDR2 PC2-6400: CL=6

I am taking your word for it that the RAMmon test is accurate and that you have properly used the Crucial configurator.

Thank you so much to all of you for your patience!

Finally, the hardware noob understands, and has no more questions!

This thread is resolved, and I shall mark it as such!

Thanks again,

Richard
 

My Computer My Computer

At a glance

Vista Home Premium x86 SP2Intel Core 2 Quad Q9300 2.50GHz4 gb (DDR2 800) 400MHzATI Radeon HD 3870 (512 MBytes)
Computer Manufacturer/Model Number
Dell XPS 420
OS
Vista Home Premium x86 SP2
CPU
Intel Core 2 Quad Q9300 2.50GHz
Motherboard
Stock Dell 0TP406
Memory
4 gb (DDR2 800) 400MHz
Graphics Card(s)
ATI Radeon HD 3870 (512 MBytes)
Monitor(s) Displays
1 x Dell 2007FP and 1 x (old) Sonic flat screen
Screen Resolution
1600 x 1200 and 1280 x 1204
Hard Drives
1 x 640Gb (SATA 300) Western Digital: WDC WD6400AAKS-75A7B0 1 x 1Tb (SATA 600) Western Digital: Caviar Black, SATA 6GB/S, 64Mb cache, 8ms Western Digital: WDC WD1002FAEX-00Z3A0 ATA Device
Case
Dell XPS 420
Cooling
Stock Fan
Keyboard
Dell Bluetooth
Mouse
Advent Optical ADE-WG01 (colour change light up)
Internet Speed
Varies from 10kb/s to 170kb/s. So unreliable it is not funny
Other Info
ASUS USB 3.0 5Gbps/SATA 6Gbps - PCI-Express Combo Controller Card (U3S6)
Your ram will run at the speed of the slowest ram, so get at least the speed at what you have. Any faster won't matter unless you plan on changing the slower out again later. A Guy
 

My Computer My Computer

At a glance

Windows 10 Home x64INTEL Core i5-750 Quad-Core 3.37GHzHyperX Fury Black Series 8GB (2 x 4GB) 1866MhzEVGA GeForce GTX 750 Superclocked 1GB 128-Bit...
Computer type
PC/Desktop
OS
Windows 10 Home x64
CPU
INTEL Core i5-750 Quad-Core 3.37GHz
Motherboard
ASUS P7P55D
Memory
HyperX Fury Black Series 8GB (2 x 4GB) 1866Mhz
Graphics Card(s)
EVGA GeForce GTX 750 Superclocked 1GB 128-Bit GDDR5
Monitor(s) Displays
LG 32MA68HY 32" IPS
Screen Resolution
1920 x 1080
Hard Drives
Samsung 840 Evo 120GB, SEAGATE 500GB Barracuda® 7200.12, SATA 3 Gb/s, 7200 RPM, 16MB cache
PSU
ANTEC TruePower New TP-550, 80 PLUS, 550W
Case
ANTEC Three Hundred Illusion
Cooling
COOLER MASTER Hyper 212 Plus, 4 x 120mm 1 x 140mm Noctua's
Internet Speed
85 + Mbps
Antivirus
Avast
Browser
Vivaldi
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