Jump to content

How do you put into numbers the difference in performance between Dual Channel and Quad Channel RAM

Pekoms
By Pekoms
in CPUs, Motherboards, and Memory
 Share
Go to solution Solved by jj9987,

https://uk.hardware.info/reviews/7417/4/single-dual-and-quad-channel-memory-performance-more-lanes-more-speed-benchmarks-applications

Posted

I'm having trouble finding how to calculate the difference in performance between Dual Channel and Quad Channel RAM. I know how to calculate RAM timing for Dual Channel, but have no idea if it's different for Quad Channel. I also want to know how to calculate bandwidth for any type, Single, Dual and Quad.

Link to comment
Share on other sites
Link to post
Share on other sites
Posted

The issue here is that the actual performance gains or losses will be completely depended on the software and how it handles having the extra bandwidth or not.

 

Every software is different so even if you pin point your exact bandwidth for each type of configuration that is still a distant representations of expected performance bump.

Personal Desktop":

CPU: Intel Core i7 10700K @5ghz |~| Cooling: bq! Dark Rock Pro 4 |~| MOBO: Gigabyte Z490UD ATX|~| RAM: 16gb DDR4 3333mhzCL16 G.Skill Trident Z |~| GPU: RX 6900XT Sapphire Nitro+ |~| PSU: Corsair TX650M 80Plus Gold |~| Boot:  SSD WD Green M.2 2280 240GB |~| Storage: 1x3TB HDD 7200rpm Seagate Barracuda + SanDisk Ultra 3D 1TB |~| Case: Fractal Design Meshify C Mini |~| Display: Toshiba UL7A 4K/60hz |~| OS: Windows 10 Pro.

Luna, the temporary Desktop:

CPU: AMD R9 7950XT  |~| Cooling: bq! Dark Rock 4 Pro |~| MOBO: Gigabyte Aorus Master |~| RAM: 32G Kingston HyperX |~| GPU: AMD Radeon RX 7900XTX (Reference) |~| PSU: Corsair HX1000 80+ Platinum |~| Windows Boot Drive: 2x 512GB (1TB total) Plextor SATA SSD (RAID0 volume) |~| Linux Boot Drive: 500GB Kingston A2000 |~| Storage: 4TB WD Black HDD |~| Case: Cooler Master Silencio S600 |~| Display 1 (leftmost): Eizo (unknown model) 1920x1080 IPS @ 60Hz|~| Display 2 (center): BenQ ZOWIE XL2540 1920x1080 TN @ 240Hz |~| Display 3 (rightmost): Wacom Cintiq Pro 24 3840x2160 IPS @ 60Hz 10-bit |~| OS: Windows 10 Pro (games / art) + Linux (distro: NixOS; programming and daily driver)
Link to comment
Share on other sites
Link to post
Share on other sites
Posted

theoretically transfer rate doubles, other stuff remains the same. Timings used are also same as far as memory sticks are concerned, but memory controller is another factor.

CPU: i7-2600K 4751MHz 1.44V (software) --> 1.47V at the back of the socket Motherboard: Asrock Z77 Extreme4 (BCLK: 103.3MHz) CPU Cooler: Noctua NH-D15 RAM: Adata XPG 2x8GB DDR3 (XMP: 2133MHz 10-11-11-30 CR2, custom: 2203MHz 10-11-10-26 CR1 tRFC:230 tREFI:14000) GPU: Asus GTX 1070 Dual (Super Jetstream vbios, +70(2025-2088MHz)/+400(8.8Gbps)) SSD: Samsung 840 Pro 256GB (main boot drive), Transcend SSD370 128GB PSU: Seasonic X-660 80+ Gold Case: Antec P110 Silent, 5 intakes 1 exhaust Monitor: AOC G2460PF 1080p 144Hz (150Hz max w/ DP, 121Hz max w/ HDMI) TN panel Keyboard: Logitech G610 Orion (Cherry MX Blue) with SteelSeries Apex M260 keycaps Mouse: BenQ Zowie FK1

 

Model: HP Omen 17 17-an110ca CPU: i7-8750H (0.125V core & cache, 50mV SA undervolt) GPU: GTX 1060 6GB Mobile (+80/+450, 1650MHz~1750MHz 0.78V~0.85V) RAM: 8+8GB DDR4-2400 18-17-17-39 2T Storage: HP EX920 1TB PCIe x4 M.2 SSD + Crucial MX500 1TB 2.5" SATA SSD, 128GB Toshiba PCIe x2 M.2 SSD (KBG30ZMV128G) gone cooking externally, 1TB Seagate 7200RPM 2.5" HDD (ST1000LM049-2GH172) left outside Monitor: 1080p 126Hz IPS G-sync

 

Desktop benching:

Cinebench R15 Single thread:168 Multi-thread: 833 

SuperPi (v1.5 from Techpowerup, PI value output) 16K: 0.100s 1M: 8.255s 32M: 7m 45.93s

Link to comment
Share on other sites
Link to post
Share on other sites
Posted
  • Solution

https://uk.hardware.info/reviews/7417/4/single-dual-and-quad-channel-memory-performance-more-lanes-more-speed-benchmarks-applications

HAL9000: AMD Ryzen 9 3900x | Noctua NH-D15 chromax.black | 32 GB Corsair Vengeance LPX DDR4 3200 MHz | Asus X570 Prime Pro | ASUS TUF 3080 Ti | 1 TB Samsung 970 Evo Plus + 1 TB Crucial MX500 + 6 TB WD RED | Corsair HX1000 | be quiet Pure Base 500DX | LG 34UM95 34" 3440x1440

Hydrogen server: Intel i3-10100 | Cryorig M9i | 64 GB Crucial Ballistix 3200MHz DDR4 | Gigabyte B560M-DS3H | 33 TB of storage | Fractal Design Define R5 | unRAID 6.9.2

Carbon server: Fujitsu PRIMERGY RX100 S7p | Xeon E3-1230 v2 | 16 GB DDR3 ECC | 60 GB Corsair SSD & 250 GB Samsung 850 Pro | Intel i340-T4 | ESXi 6.5.1

Big Mac cluster: 2x Raspberry Pi 2 Model B | 1x Raspberry Pi 3 Model B | 2x Raspberry Pi 3 Model B+

Link to comment
Share on other sites
Link to post
Share on other sites
Posted
  • Author
6 minutes ago, Princess Cadence said:

The issue here is that the actual performance gains or losses will be completely depended on the software and how it handles having the extra bandwidth or not.

 

Every software is different so even if you pin point your exact bandwidth for each type of configuration that is still a distant representations of expected performance bump.

I'm well aware of that. I just like RAW numbers, even if they are a best case scenario is most cases.

Link to comment
Share on other sites
Link to post
Share on other sites
Posted

I don't think you can have Quad channel on a mainstreasm / consumer grade motherboard.

Unless you have a hedt workstation / server class (x99 / threadripper).

Ryzen 5700g @ 4.4ghz all cores | Asrock B550M Steel Legend | 3060 | 2x 16gb Micron E 2666 @ 4200mhz cl16 | 500gb WD SN750 | 12 TB HDD | Deepcool Gammax 400 w/ 2 delta 4000rpm push pull | Antec Neo Eco Zen 500w

Link to comment
Share on other sites
Link to post
Share on other sites
Posted
  • Author
5 minutes ago, SupaKomputa said:

I don't think you can have Quad channel on a mainstreasm / consumer grade motherboard.

Unless you have a hedt workstation / server class (x99 / threadripper).

I know. I just wanted to find out how to calculate the difference. It seems to be roughly a 2x in terms of bandwidth

Link to comment
Share on other sites
Link to post
Share on other sites
Posted

use a synthetic benchmark like pc mark if you are curious.

or you can turn the ram into ramdisk and try use program like crystaldiskmark to simulate bandwidth.

https://www.ghacks.net/2017/04/03/the-best-free-ramdisk-programs-for-windows/

Ryzen 5700g @ 4.4ghz all cores | Asrock B550M Steel Legend | 3060 | 2x 16gb Micron E 2666 @ 4200mhz cl16 | 500gb WD SN750 | 12 TB HDD | Deepcool Gammax 400 w/ 2 delta 4000rpm push pull | Antec Neo Eco Zen 500w

Link to comment
Share on other sites
Link to post
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
 Share
Go to topic listing CPUs, Motherboards, and Memory

×