Posted February 18, 2021 Lets say how do I calculate which of the following is faster? No I do not wanna know which is faster but rather how to calculate it... A) DDR4-3200MHz CL14-14-14-34 B) DDR4-3600MHz CL16-18-18-38 C) DDR4-3800MHz CL18-19-19-39 Zen-III-X8-5900X (Gamestation 5) Spoiler Case: Medion Micro-ATX Case / Case Fan Front: SUNON MagLev PF70251VX-Q000-S99 70mm / Case Fan Rear: Fanner Tech(Shen Zhen)Co.,LTD. 80mm (Purple) / Controller: Sony Dualshock 4 Wireless (DS4Windows) / Cooler: AMD Near-silent 125w Thermal Solution / CPU: AMD Ryzen 5 3600, 6-cores, 12-threads, 4.2/4.2GHz, 35,3MB cache (T.S.M.C. 7nm FinFET) / CPU: AMD Ryzen 9(7) 5900X(ECO mode), 12(8)-cores, 24(16)-threads, 4.5/4.8GHz, 70.5MB(68,35MB) cache (T.S.M.C. 7nm FinFET) / Display: HP 24" L2445w (64Hz OC) 1920x1200 / GPU: MSI GeForce GTX 970 4GD5 OC "Afterburner" @1450MHz (T.S.M.C. 28nm) / GPU: ASUS Radeon RX 6600 XT DUAL OC RDNA2 32CUs @2.6GHz 10.6 TFLOPS (T.S.M.C. 7nm FinFET) / Keyboard: HP KB-0316 PS/2 (Nordic) / Motherboard: ASRock B450M Pro4, Socket-AM4 (SAM enabled) / Mouse: Razer Abyssus 2014 / PCI-E: ASRock USB 3.1/A+C (PCI Express x4) / PSU: EVGA SuperNOVA G2, 550W / RAM A2 & B2: DDR4-3600MHz CL16-18-8-19-37-1T "SK Hynix 8Gbit CJR" (2x16GB) / Operating System: Windows 10 Home / Sound 1: Zombee Z500 / Sound 2: Logitech Stereo Speakers S-150 / Storage 1 & 2: Samsung 850 EVO 500GB SSD / Storage 3: Western Digital My Passport 2.5" 2TB HDD / Storage 4: Western Digital Elements Desktop 2TB HDD / Storage 5: Kingston A2000 1TB M.2 NVME SSD / Wi-fi & Bluetooth: ASUS PCE-AC55BT Wireless Adapter (Intel) Lake-V-X6-10600 (Gaming PC) R23 score MC: 9190pts | R23 score SC: 1302pts R20 score MC: 3529cb | R20 score SC: 506cb Spoiler Case: Cooler Master HAF XB Evo Black / Case Fan(s) Front: Noctua NF-A14 ULN 140mm Premium Fans / Case Fan(s) Rear: Corsair Air Series AF120 Quiet Edition (red) / Case Fan(s) Side: Noctua NF-A6x25 FLX 60mm Premium Fan / Controller: Sony Dualshock 4 Wireless (DS4Windows) / Cooler: Cooler Master Hyper 212 Evo / CPU: Intel Core i5-10600(ASUS Performance Enhancement), 6-cores, 12-threads, 4.4/4.8GHz, 13,7MB cache (Intel 14nm++ FinFET) / Display: ASUS 24" LED VN247H (67Hz OC) 1920x1080p / GPU: Gigabyte Radeon RX Vega 56 Gaming OC GCN5 56CUs @1.5GHz 10.54 TFLOPS (Samsung 14nm FinFET) R.ID (NimeZ drivers) / Keyboard: Logitech Desktop K120 (Nordic) / Motherboard: ASUS PRIME B460 PLUS, Socket-LGA1200 (SAM enabled) / Mouse: Razer Abyssus 2014 / PCI-E: ASRock USB 3.1/A+C (PCI Express x4) / PSU: EVGA SuperNOVA G2, 850W / RAM A1, A2, B1 & B2: DDR4-2666MHz CL13-15-15-15-35-1T "Samsung 8Gbit C-Die" (4x8GB) / Operating System: Windows 10 Home / Sound: Zombee Z300 / Storage 1 & 2: Samsung 850 EVO 500GB SSD / Storage 3: Seagate® Barracuda 2TB HDD / Storage 4: Seagate® Desktop 2TB SSHD / Storage 5: Crucial P1 1000GB M.2 SSD/ Storage 6: Western Digital WD7500BPKX 2.5" HDD / Wi-fi: TP-Link TL-WN851N 11n Wireless Adapter (Qualcomm Atheros) Vishera-X8-9370 | R20 score MC: 1476cb Spoiler Case: Cooler Master HAF XB Evo Black / Case Fan(s) Front: Noctua NF-A14 ULN 140mm Premium Fans / Case Fan(s) Rear: Corsair Air Series AF120 Quiet Edition (red) / Case Fan(s) Side: Noctua NF-A6x25 FLX 60mm Premium Fan / Case Fan VRM: SUNON MagLev KDE1209PTV3 92mm / Controller: Sony Dualshock 4 Wireless (DS4Windows) / Cooler: Cooler Master Hyper 212 Evo / CPU: AMD FX-8370 (Base: @4.4GHz | Turbo: @4.7GHz) Black Edition Eight-Core (Global Foundries 32nm) / Display: ASUS 24" LED VN247H (67Hz OC) 1920x1080p / GPU: MSI GeForce GTX 970 4GD5 OC "Afterburner" @1450MHz (T.S.M.C. 28nm) / GPU: Gigabyte Radeon RX Vega 56 Gaming OC @1501MHz (Samsung 14nm FinFET) / Keyboard: Logitech Desktop K120 (Nordic) / Motherboard: MSI 970 GAMING, Socket-AM3+ / Mouse: Razer Abyssus 2014 / PCI-E: ASRock USB 3.1/A+C (PCI Express x4) / PSU: EVGA SuperNOVA G2, 850W PSU / RAM 1, 2, 3 & 4: Corsair Vengeance DDR3-1866MHz CL8-10-10-28-37-2T (4x4GB) 16.38GB / Operating System 1: Windows 10 Home / Sound: Zombee Z300 / Storage 1: Samsung 850 EVO 500GB SSD (x2) / Storage 2: Seagate® Barracuda 2TB HDD / Storage 3: Seagate® Desktop 2TB SSHD / Wi-fi: TP-Link TL-WN951N 11n Wireless Adapter Godavari-X4-880K | R20 score MC: 810cb Spoiler Case: Medion Micro-ATX Case / Case Fan Front: SUNON MagLev PF70251VX-Q000-S99 70mm / Case Fan Rear: Fanner Tech(Shen Zhen)Co.,LTD. 80mm (Purple) / Controller: Sony Dualshock 4 Wireless (DS4Windows) / Cooler: AMD Near-silent 95w Thermal Solution / Cooler: AMD Near-silent 125w Thermal Solution / CPU: AMD Athlon X4 860K Black Edition Elite Quad-Core (T.S.M.C. 28nm) / CPU: AMD Athlon X4 880K Black Edition Elite Quad-Core (T.S.M.C. 28nm) / Display: HP 19" Flat Panel L1940 (75Hz) 1280x1024 / GPU: EVGA GeForce GTX 960 SuperSC 2GB (T.S.M.C. 28nm) / GPU: MSI GeForce GTX 970 4GD5 OC "Afterburner" @1450MHz (T.S.M.C. 28nm) / Keyboard: HP KB-0316 PS/2 (Nordic) / Motherboard: MSI A78M-E45 V2, Socket-FM2+ / Mouse: Razer Abyssus 2014 / PCI-E: ASRock USB 3.1/A+C (PCI Express x4) / PSU: EVGA SuperNOVA G2, 550W PSU / RAM 1, 2, 3 & 4: SK hynix DDR3-1866MHz CL9-10-11-27-40 (4x4GB) 16.38GB / Operating System 1: Ubuntu Gnome 16.04 LTS (Xenial Xerus) / Operating System 2: Windows 10 Home / Sound 1: Zombee Z500 / Sound 2: Logitech Stereo Speakers S-150 / Storage 1: Samsung 850 EVO 500GB SSD (x2) / Storage 2: Western Digital My Passport 2.5" 2TB HDD / Storage 3: Western Digital Elements Desktop 2TB HDD / Wi-fi: TP-Link TL-WN851N 11n Wireless Adapter Acer Aspire 7738G custom (changed CPU, GPU & Storage) Spoiler CPU: Intel Core 2 Duo P8600, 2-cores, 2-threads, 2.4GHz, 3MB cache (Intel 45nm) / GPU: ATi Radeon HD 4570 515MB DDR2 (T.S.M.C. 55nm) / RAM: DDR2-1066MHz CL7-7-7-20-1T (2x2GB) / Operating System: Windows 10 Home / Storage: Crucial BX500 480GB 3D NAND SATA 2.5" SSD Complete portable device SoC history: Spoiler Apple A4 - Apple iPod touch (4th generation) Apple A5 - Apple iPod touch (5th generation) Apple A9 - Apple iPhone 6s Plus HiSilicon Kirin 810 (T.S.M.C. 7nm) - Huawei P40 Lite / Huawei nova 7i Mediatek MT2601 (T.S.M.C 28nm) - TicWatch E Mediatek MT6580 (T.S.M.C 28nm) - TECNO Spark 2 (1GB RAM) Mediatek MT6592M (T.S.M.C 28nm) - my|phone my32 (orange) Mediatek MT6592M (T.S.M.C 28nm) - my|phone my32 (yellow) Mediatek MT6735 (T.S.M.C 28nm) - HMD Nokia 3 Dual SIM Mediatek MT6737 (T.S.M.C 28nm) - Cherry Mobile Flare S6 Mediatek MT6739 (T.S.M.C 28nm) - my|phone myX8 (blue) Mediatek MT6739 (T.S.M.C 28nm) - my|phone myX8 (gold) Mediatek MT6750 (T.S.M.C 28nm) - honor 6C Pro / honor V9 Play Mediatek MT6765 (T.S.M.C 12nm) - TECNO Pouvoir 3 Plus Mediatek MT6797D (T.S.M.C 20nm) - my|phone Brown Tab 1 Qualcomm MSM8926 (T.S.M.C. 28nm) - Microsoft Lumia 640 LTE Qualcomm MSM8974AA (T.S.M.C. 28nm) - Blackberry Passport Qualcomm SDM710 (Samsung 10nm) - Oppo Realme 3 Pro Link to comment Share on other sites More sharing options... 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Posted February 18, 2021 31 minutes ago, Nena Trinity said: Lets say how do I calculate which of the following is faster? No I do not wanna know which is faster but rather how to calculate it... A) DDR4-3200MHz CL14-14-14-34 B) DDR4-3600MHz CL16-18-18-38 C) DDR4-3800MHz CL18-19-19-39 Stumbled across this topic https://www.overclockers.com/forums/showthread.php/773720-Calculating-memory-speed-CAS-vs-MHz You could divide the CL latency (since those are ticks on the actual frequency) by the rated frequency. 14/3200 = 0.004375 16/3600 = 0.0044444444444444 18/3800 = 0.0047368421052632 Multiply by x1000 to get your actual latency at rated frequency in nanoseconds. 3200 CL14 = 4.375 ns 3600 CL16 = 4.444 ns 3800 CL18 = 4.737 ns Lower would be better (faster timing compared to clock) so 3200 at CL14 would be a better option, but only very slightly. It's also not representative in real-world performance but only theoretical. The actual transfer rates are usually better with higher frequency memory. Link to comment Share on other sites More sharing options... Link to post Share on other sites More sharing options...
Posted February 18, 2021 13 minutes ago, Naijin said: 3200 CL14 = 4.375 ns 3600 CL16 = 4.444 ns 3800 CL18 = 4.737 ns so in addition to this, you need to take into account the frequency as well. so the 3200CL14 kit has 7% faster latency than the 3800CL18 kit, but the 3800 kit is 19% faster based on frequency. so in this case, I'd say the 3800CL18 kit is better. Link to comment Share on other sites More sharing options... Link to post Share on other sites More sharing options...
Posted February 18, 2021 Crude way to calc it. With 3200 with C16, divide 3200 by 16 = 200. 3200 with C18 would be 177.8 (slower). So higher is better (in theory). 3200/14 = 228.6 3600/16 = 225.0 3800/18 = 211.1 However, this crude calc is best used for comparing RAM timings of RAM of the same or similar speeds. When the speeds are different, it's not so pertinent. There's also the real world fact that some people won't get their RAM to run at 3800, so the theoretical speed of it is useless. The simple answer is to choose the lowest Cas RAM for the fastest RAM speed you can actually run at. The other real world answer is to pick the fastest stable solution, so you don't spend the next 2-3 years chasing your timings. ~ Gaming since 1980 ~ PassMark | UserBench Link to comment Share on other sites More sharing options... Link to post Share on other sites More sharing options...
Posted February 18, 2021 Author 5 hours ago, Naijin said: Stumbled across this topic https://www.overclockers.com/forums/showthread.php/773720-Calculating-memory-speed-CAS-vs-MHz You could divide the CL latency (since those are ticks on the actual frequency) by the rated frequency. 14/3200 = 0.004375 16/3600 = 0.0044444444444444 18/3800 = 0.0047368421052632 Multiply by x1000 to get your actual latency at rated frequency in nanoseconds. 3200 CL14 = 4.375 ns 3600 CL16 = 4.444 ns 3800 CL18 = 4.737 ns Lower would be better (faster timing compared to clock) so 3200 at CL14 would be a better option, but only very slightly. It's also not representative in real-world performance but only theoretical. The actual transfer rates are usually better with higher frequency memory. 5 hours ago, boggy77 said: so in addition to this, you need to take into account the frequency as well. so the 3200CL14 kit has 7% faster latency than the 3800CL18 kit, but the 3800 kit is 19% faster based on frequency. so in this case, I'd say the 3800CL18 kit is better. 1 hour ago, camieabz said: Crude way to calc it. With 3200 with C16, divide 3200 by 16 = 200. 3200 with C18 would be 177.8 (slower). So higher is better (in theory). 3200/14 = 228.6 3600/16 = 225.0 3800/18 = 211.1 However, this crude calc is best used for comparing RAM timings of RAM of the same or similar speeds. When the speeds are different, it's not so pertinent. There's also the real world fact that some people won't get their RAM to run at 3800, so the theoretical speed of it is useless. The simple answer is to choose the lowest Cas RAM for the fastest RAM speed you can actually run at. The other real world answer is to pick the fastest stable solution, so you don't spend the next 2-3 years chasing your timings. What about the 3 other sub-latencies? I know that he had a way to calculate all 4 into it... Zen-III-X8-5900X (Gamestation 5) Spoiler Case: Medion Micro-ATX Case / Case Fan Front: SUNON MagLev PF70251VX-Q000-S99 70mm / Case Fan Rear: Fanner Tech(Shen Zhen)Co.,LTD. 80mm (Purple) / Controller: Sony Dualshock 4 Wireless (DS4Windows) / Cooler: AMD Near-silent 125w Thermal Solution / CPU: AMD Ryzen 5 3600, 6-cores, 12-threads, 4.2/4.2GHz, 35,3MB cache (T.S.M.C. 7nm FinFET) / CPU: AMD Ryzen 9(7) 5900X(ECO mode), 12(8)-cores, 24(16)-threads, 4.5/4.8GHz, 70.5MB(68,35MB) cache (T.S.M.C. 7nm FinFET) / Display: HP 24" L2445w (64Hz OC) 1920x1200 / GPU: MSI GeForce GTX 970 4GD5 OC "Afterburner" @1450MHz (T.S.M.C. 28nm) / GPU: ASUS Radeon RX 6600 XT DUAL OC RDNA2 32CUs @2.6GHz 10.6 TFLOPS (T.S.M.C. 7nm FinFET) / Keyboard: HP KB-0316 PS/2 (Nordic) / Motherboard: ASRock B450M Pro4, Socket-AM4 (SAM enabled) / Mouse: Razer Abyssus 2014 / PCI-E: ASRock USB 3.1/A+C (PCI Express x4) / PSU: EVGA SuperNOVA G2, 550W / RAM A2 & B2: DDR4-3600MHz CL16-18-8-19-37-1T "SK Hynix 8Gbit CJR" (2x16GB) / Operating System: Windows 10 Home / Sound 1: Zombee Z500 / Sound 2: Logitech Stereo Speakers S-150 / Storage 1 & 2: Samsung 850 EVO 500GB SSD / Storage 3: Western Digital My Passport 2.5" 2TB HDD / Storage 4: Western Digital Elements Desktop 2TB HDD / Storage 5: Kingston A2000 1TB M.2 NVME SSD / Wi-fi & Bluetooth: ASUS PCE-AC55BT Wireless Adapter (Intel) Lake-V-X6-10600 (Gaming PC) R23 score MC: 9190pts | R23 score SC: 1302pts R20 score MC: 3529cb | R20 score SC: 506cb Spoiler Case: Cooler Master HAF XB Evo Black / Case Fan(s) Front: Noctua NF-A14 ULN 140mm Premium Fans / Case Fan(s) Rear: Corsair Air Series AF120 Quiet Edition (red) / Case Fan(s) Side: Noctua NF-A6x25 FLX 60mm Premium Fan / Controller: Sony Dualshock 4 Wireless (DS4Windows) / Cooler: Cooler Master Hyper 212 Evo / CPU: Intel Core i5-10600(ASUS Performance Enhancement), 6-cores, 12-threads, 4.4/4.8GHz, 13,7MB cache (Intel 14nm++ FinFET) / Display: ASUS 24" LED VN247H (67Hz OC) 1920x1080p / GPU: Gigabyte Radeon RX Vega 56 Gaming OC GCN5 56CUs @1.5GHz 10.54 TFLOPS (Samsung 14nm FinFET) R.ID (NimeZ drivers) / Keyboard: Logitech Desktop K120 (Nordic) / Motherboard: ASUS PRIME B460 PLUS, Socket-LGA1200 (SAM enabled) / Mouse: Razer Abyssus 2014 / PCI-E: ASRock USB 3.1/A+C (PCI Express x4) / PSU: EVGA SuperNOVA G2, 850W / RAM A1, A2, B1 & B2: DDR4-2666MHz CL13-15-15-15-35-1T "Samsung 8Gbit C-Die" (4x8GB) / Operating System: Windows 10 Home / Sound: Zombee Z300 / Storage 1 & 2: Samsung 850 EVO 500GB SSD / Storage 3: Seagate® Barracuda 2TB HDD / Storage 4: Seagate® Desktop 2TB SSHD / Storage 5: Crucial P1 1000GB M.2 SSD/ Storage 6: Western Digital WD7500BPKX 2.5" HDD / Wi-fi: TP-Link TL-WN851N 11n Wireless Adapter (Qualcomm Atheros) Vishera-X8-9370 | R20 score MC: 1476cb Spoiler Case: Cooler Master HAF XB Evo Black / Case Fan(s) Front: Noctua NF-A14 ULN 140mm Premium Fans / Case Fan(s) Rear: Corsair Air Series AF120 Quiet Edition (red) / Case Fan(s) Side: Noctua NF-A6x25 FLX 60mm Premium Fan / Case Fan VRM: SUNON MagLev KDE1209PTV3 92mm / Controller: Sony Dualshock 4 Wireless (DS4Windows) / Cooler: Cooler Master Hyper 212 Evo / CPU: AMD FX-8370 (Base: @4.4GHz | Turbo: @4.7GHz) Black Edition Eight-Core (Global Foundries 32nm) / Display: ASUS 24" LED VN247H (67Hz OC) 1920x1080p / GPU: MSI GeForce GTX 970 4GD5 OC "Afterburner" @1450MHz (T.S.M.C. 28nm) / GPU: Gigabyte Radeon RX Vega 56 Gaming OC @1501MHz (Samsung 14nm FinFET) / Keyboard: Logitech Desktop K120 (Nordic) / Motherboard: MSI 970 GAMING, Socket-AM3+ / Mouse: Razer Abyssus 2014 / PCI-E: ASRock USB 3.1/A+C (PCI Express x4) / PSU: EVGA SuperNOVA G2, 850W PSU / RAM 1, 2, 3 & 4: Corsair Vengeance DDR3-1866MHz CL8-10-10-28-37-2T (4x4GB) 16.38GB / Operating System 1: Windows 10 Home / Sound: Zombee Z300 / Storage 1: Samsung 850 EVO 500GB SSD (x2) / Storage 2: Seagate® Barracuda 2TB HDD / Storage 3: Seagate® Desktop 2TB SSHD / Wi-fi: TP-Link TL-WN951N 11n Wireless Adapter Godavari-X4-880K | R20 score MC: 810cb Spoiler Case: Medion Micro-ATX Case / Case Fan Front: SUNON MagLev PF70251VX-Q000-S99 70mm / Case Fan Rear: Fanner Tech(Shen Zhen)Co.,LTD. 80mm (Purple) / Controller: Sony Dualshock 4 Wireless (DS4Windows) / Cooler: AMD Near-silent 95w Thermal Solution / Cooler: AMD Near-silent 125w Thermal Solution / CPU: AMD Athlon X4 860K Black Edition Elite Quad-Core (T.S.M.C. 28nm) / CPU: AMD Athlon X4 880K Black Edition Elite Quad-Core (T.S.M.C. 28nm) / Display: HP 19" Flat Panel L1940 (75Hz) 1280x1024 / GPU: EVGA GeForce GTX 960 SuperSC 2GB (T.S.M.C. 28nm) / GPU: MSI GeForce GTX 970 4GD5 OC "Afterburner" @1450MHz (T.S.M.C. 28nm) / Keyboard: HP KB-0316 PS/2 (Nordic) / Motherboard: MSI A78M-E45 V2, Socket-FM2+ / Mouse: Razer Abyssus 2014 / PCI-E: ASRock USB 3.1/A+C (PCI Express x4) / PSU: EVGA SuperNOVA G2, 550W PSU / RAM 1, 2, 3 & 4: SK hynix DDR3-1866MHz CL9-10-11-27-40 (4x4GB) 16.38GB / Operating System 1: Ubuntu Gnome 16.04 LTS (Xenial Xerus) / Operating System 2: Windows 10 Home / Sound 1: Zombee Z500 / Sound 2: Logitech Stereo Speakers S-150 / Storage 1: Samsung 850 EVO 500GB SSD (x2) / Storage 2: Western Digital My Passport 2.5" 2TB HDD / Storage 3: Western Digital Elements Desktop 2TB HDD / Wi-fi: TP-Link TL-WN851N 11n Wireless Adapter Acer Aspire 7738G custom (changed CPU, GPU & Storage) Spoiler CPU: Intel Core 2 Duo P8600, 2-cores, 2-threads, 2.4GHz, 3MB cache (Intel 45nm) / GPU: ATi Radeon HD 4570 515MB DDR2 (T.S.M.C. 55nm) / RAM: DDR2-1066MHz CL7-7-7-20-1T (2x2GB) / Operating System: Windows 10 Home / Storage: Crucial BX500 480GB 3D NAND SATA 2.5" SSD Complete portable device SoC history: Spoiler Apple A4 - Apple iPod touch (4th generation) Apple A5 - Apple iPod touch (5th generation) Apple A9 - Apple iPhone 6s Plus HiSilicon Kirin 810 (T.S.M.C. 7nm) - Huawei P40 Lite / Huawei nova 7i Mediatek MT2601 (T.S.M.C 28nm) - TicWatch E Mediatek MT6580 (T.S.M.C 28nm) - TECNO Spark 2 (1GB RAM) Mediatek MT6592M (T.S.M.C 28nm) - my|phone my32 (orange) Mediatek MT6592M (T.S.M.C 28nm) - my|phone my32 (yellow) Mediatek MT6735 (T.S.M.C 28nm) - HMD Nokia 3 Dual SIM Mediatek MT6737 (T.S.M.C 28nm) - Cherry Mobile Flare S6 Mediatek MT6739 (T.S.M.C 28nm) - my|phone myX8 (blue) Mediatek MT6739 (T.S.M.C 28nm) - my|phone myX8 (gold) Mediatek MT6750 (T.S.M.C 28nm) - honor 6C Pro / honor V9 Play Mediatek MT6765 (T.S.M.C 12nm) - TECNO Pouvoir 3 Plus Mediatek MT6797D (T.S.M.C 20nm) - my|phone Brown Tab 1 Qualcomm MSM8926 (T.S.M.C. 28nm) - Microsoft Lumia 640 LTE Qualcomm MSM8974AA (T.S.M.C. 28nm) - Blackberry Passport Qualcomm SDM710 (Samsung 10nm) - Oppo Realme 3 Pro Link to comment Share on other sites More sharing options... 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