Quad Channel Memory at 64GB

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MaqDrew

MaqDrew

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I choose a X99 MoBo form asus "SABERTOOTH X99" and in the spec I saw the memory support the quad channel maximum 64 gigs, and there has 8 slots for ram.

My question is, If I use 64 Gigs as 4x16GB... that means it's quad channel, it's OK.

But if I use 64gb as 8x8GB ... does that mean quad channel????? and if I do that there has any problem.......??? if not

so what does mean by quad channel?????
 
Solution
Wolfshadw
any time you have a factor of four ram modules installed (4 8, 12), then your motherboard will take advantage of the Quad-Channel feature.
Click to expand...

So if you have 8 RAM modules installed, your motherboard will take advantage of the Quad-Channel function.

-Wolf sends
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Wolfshadw

Wolfshadw

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[strike]Quad channel means that all four RAM slots work in conjunction with each other. That is a feature of the motherboard. Just because you have four RAM slots installed does not mean you are running in Quad-Channel.

-Wolf sends[/strike]

Need to read the entire post - Sorry about that

Memory channels are a feature of the motherboard and not a measure of how many RAM modules you have installed. If the motherboard supports quad-channel then any time you have a factor of four ram modules installed (4 8, 12), then your motherboard will take advantage of the Quad-Channel feature.

If you have an off number of RAM modules installed, your motherboard may revert to either dual-channel (in case of an even number of RAM modules or even single-channel (regardless of how many modules are installed).

-Wolf sends
 
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MaqDrew

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finally you said..... if i wanna get full feature of quad channel so I should install 4 modules of ram (while sabertooth x99 has 8 slots) .......... in that case I wanna use 64GB.. so I have to use 4x16GB (DDR4), then I get full feature of quad channel........... or if I use 8x8gb (dd4) I can't get full feature of quad channel because my ram module will be migrate dual channel because I using 8 modules........... is that right???
 
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MaqDrew

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I think u din't read my post carefully...... I wanna use 64GB (DD4) ........ If I use 8x8GB use, in that case how will be quad channel... it will 8 channel (8 modules)..... I wanna get full feature of quad channel........ how can I get that.......... and other thing is ur "4x8GB" solution is absolutely bullshitt ........:??:
 
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Rabmac

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Here is some simple maths to help your understanding.

8 (number of RAM slots) divided by 4 (number of slots required to utilise quad channel) = 2

So to fully utilise the quad channel you either put 4 sticks of RAM or 8 sticks of RAM (1 or 2 quad channel). As your boards capacity is 64GB that means the maximum you should use in each slot is:

64GB (max capacity) divided by 8 (number of slots) = 8GB per slot

So as I said earlier you should use 4x8GB or 8x8gb if you want to get optimal performance.
 
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Wolfshadw

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Problem with that is that the motherboard supports a MAX of 64GB RAM. so each slot can only have a max of 8GB.
Motherboard Specs

-Wolf sends
 
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JackNaylorPE

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No problem with that. 64 GB max does not rule out the option of leaving 4 slots empty. The specs on the Asus website do not mandate that all slots be used, only that memory controller is capable of addressing only 64GB

http://www.tomshardware.com/forum/313776-30-32gb-setup
http://www.tomshardware.com/answers/id-2725910/ddr-32gb-4x8-kit-16gb-4x4-kit.html
http://www.tomshardware.com/answers/id-2911566/ram-4x16-8x8.html

I have 2 x 16Gb in my 4 slot 32 MB max board on the box I am typing from
 
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MaqDrew

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so, are u sure that i can't use 4x16GB as 64GB? if u r???
so, what you think about Asus X99-Deluxe, if I take this can I use 4x16GB as 64GB??
 
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JackNaylorPE

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http://www.intel.com/content/dam/www/public/us/en/documents/datasheets/core-i7-lga2011-3-datasheet-vol-1.pdf

1.3.1 System Memory Support
Supports four DDR4 channels
Unbuffered DDR4 DIMMs supported
Independent channel mode or lockstep mode
Data burst length of eight cycles for all memory organization modes
Memory DDR4 data transfer rates of 1600 MT/s, 1866 MT/s, and 2133 MT/s
64-bit wide channels
DDR4 standard I/O Voltage of 1.2 V
2 Gb and 4 Gb DDR4 DRAM technologies supported for these devices:
UDIMMs x8, x16
Click to expand...

http://media.kingston.com/pdfs/HX_FURY_DDR4_EN.pdf

HyperX® FURY DDR4 memory automatically overclocks to the highest frequency published, up to 2666MHz, to deliver instant top-level performance for motherboards with Intel’s 100 Series and X99 chipsets. It’s a small investment for premium components that complement Intel’s 2, 4, 6 and 8-core processors for faster video editing, 3D rendering, gaming and AI processing. FURY DDR4 is available in 4GB, 8GB and 16GB capacities and 8GB–64GB kits. Its stylish low-profile heat spreader with signature FURY design lets you show off your rig in style.

Capacities - 16GB–64GB kits
Frequency Speed - 2133MHz, 2400MHz, 2666MHz, 2800MHz, 3000MHz
CAS Latency - CL12–CL16
Voltage - 1.2V–1.35V
Operating Temperature - 0°C to 85°C
Storage Temperature - -55°C to 100°C
Dimensions - 133.35mm x 55mm
Compatible - with X99, Z170, H110, H170 and B150 Intel chipsets
Click to expand...

I'd also note that while the Rampage V is listed at max 64GB also....but BIOS updates are changing that.
http://www.newegg.com/Product/Product.aspx?Item=N82E16813132262

http://www.anandtech.com/show/9188/gskill-announces-16gb-unbuffered-modules-128gb-kit-at-ddr42800

Today, G.Skill formalises this with the announcement of a 128GB memory kit for X99....At this point in time, G.Skill is showing that DDR4-2800 with 128GB works with the ASUS X99 Rampage V Extreme, although the XMP profile should allow use on other motherboards. Personally I would suggest that X99 users ensure they have the latest BIOS update before installing these modules, should they have any additional sub-timing parameters needed. I would also expect that as other manufacturers get these modules in to test, validation lists and QVL will be updated.
Click to expand...



PCPartPicker part list: http://pcpartpicker.com/p/ZWzNnn
Price breakdown by merchant: http://pcpartpicker.com/p/ZWzNnn/by_merchant/

CPU: Intel Core i7-5930K 3.5GHz 6-Core Processor ($554.99 @ SuperBiiz)
CPU Cooler: Phanteks PH-TC14PE 78.1 CFM CPU Cooler ($64.99 @ Newegg)
Motherboard: Asus SABERTOOTH X99 ATX LGA2011-3 Motherboard ($307.99 @ SuperBiiz)
Memory: G.Skill Ripjaws V Series 64GB (4 x 16GB) DDR4-2400 Memory ($229.99 @ Newegg)
Total: $1157.96
Prices include shipping, taxes, and discounts when available
Generated by PCPartPicker 2016-05-24 15:18 EDT-0400
Compatibility Check: No issues/incompatibilities found.
 
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MaqDrew

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I'm gonna using only X99 chipset
 
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JackNaylorPE

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Good.... that's why I listed all those sources showing that the RAM is compatible with X99 ... tho its actually the CPU that determines what RAM the X99 platform supports as the memory controller is integrated on the CPU.

The fact that the memory is also supported by other platforms (Z170, H110, H170 and B150) has no bearing on your usage with regard to X99.

You need RAM that is supported by X99, not exclusively for X99



 
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