Overclock.net › Forums › Industry News › Hardware News › [Xtreview] OCZ DDR3 PC 3-16000 Platinum edition
New Posts  All Forums:Forum Nav:

[Xtreview] OCZ DDR3 PC 3-16000 Platinum edition - Page 2

post #11 of 13
Quote:
Originally Posted by GTT View Post
what kind of improvement would i see moving from 1000mhz to 2000mhz ?
You should see no improvement once the RAM effective speed exceeds the effective speed of your FSB, so it depends upon your overclock. Since your starting FSB is 1066MHz, you essentially have it matched already at stock with DDR2 1000 RAM.
BladeRunner v3.0
(11 items)
 
  
CPUMotherboardGraphicsRAM
Intel Core i7-5930K @ 4.6GHz Core, 4.4GHz Cache ASUS X99 Sabertooth Sapphire R9 380 Dual-X OC G.Skill TridentZ 32GB DDR4 @ 13-15-13-33-1T 320... 
Hard DriveCoolingOSKeyboard
Samsung 850 Pro 512GB Noctua NH-D15S Windows 10 Home 64-bit Logitech G910 Orion Spark 
PowerCaseMouse
EVGA SuperNova 1000W T2 NZXT Phantom 820 Black Logitech G5 
  hide details  
Reply
BladeRunner v3.0
(11 items)
 
  
CPUMotherboardGraphicsRAM
Intel Core i7-5930K @ 4.6GHz Core, 4.4GHz Cache ASUS X99 Sabertooth Sapphire R9 380 Dual-X OC G.Skill TridentZ 32GB DDR4 @ 13-15-13-33-1T 320... 
Hard DriveCoolingOSKeyboard
Samsung 850 Pro 512GB Noctua NH-D15S Windows 10 Home 64-bit Logitech G910 Orion Spark 
PowerCaseMouse
EVGA SuperNova 1000W T2 NZXT Phantom 820 Black Logitech G5 
  hide details  
Reply
post #12 of 13
That would only be true if efficency was 100%, which never happens. I've been able to get 96%+ efficency (in buffered reads), but only with high clocked S754 AMD chips that have a single memory channel and on-die memory controlers, that were paired with Winbond memory at rediculously tight timings.

I see quite a significant difference in memory performance on the system in my sig going from DDR-800 3-3-3-8 to DDR-1200 5-5-5-12, both at the same 400MHz FSB, with the same tRD fo 5 (the lowest possible at either setting). The DDR-1200 CL5 settings are nearly 15% faster in both read bandwidth and latency. Of course real world performance differences are less, as memory is only one part of a much larger equation, I can still see decent difference in benchmarks, and even feel a modest improvement in responsiveness (both in windows, and in games).

DDR3 with it's reduction in efficency compared to DDR2, needs higher clocks (which it has) at the same FSB to compensate.

Even NVIDIA chipsets efficency gains at 1:1 are unlikly to overcome the massive deficit in clock rate with DDR-3.

Quote:
Originally Posted by Brenbren View Post
so instead of pc2 6400 ram for a 400mhz bus speed, you would want pc3 16000? to get 1:2 instead of 1:1?
PC3-12800/DDR3-1600 is a fairly good match for a 400MHz FSB.
Primary
(15 items)
 
Secondary
(13 items)
 
In progress
(10 items)
 
CPUMotherboardGraphicsRAM
5820K @ 4.2/3.5GHz core/uncore, 1.175/1.15v Gigabyte X99 SOC Champion (F22n) Gigabyte AORUS GTX 1080 Ti (F3P) @ 2025/1485, 1... 4x4GiB Crucial @ 2667, 12-12-12-28-T1, 1.34v 
Hard DriveHard DriveHard DriveCooling
Plextor M6e 128GB (fw 1.06) M.2 (PCI-E 2.0 2x) 2x Crucial M4 256GB 4x WD Scorpio Black 500GB Noctua NH-D15 
OSMonitorKeyboardPower
Windows 7 Professional x64 SP1 BenQ BL3200PT Filco Majestouch Tenkeyless (MX Brown) Corsair RM1000x 
CaseMouseAudio
Fractal Design Define R4 Logitech G402 Realtek ALC1150 + M-Audio AV40 
CPUMotherboardGraphicsRAM
X5670 @ 4.4/3.2GHz core/uncore, 1.36 vcore, 1.2... Gigabyte X58A-UD5 r2.0 w/FF3mod10 BIOS Sapphire Fury Nitro OC+ @ 1053/500, 1.225vGPU/1... 2x Samsung MV-3V4G3D/US @ 2000, 10-11-11-30-T1,... 
RAMHard DriveHard DriveHard Drive
1x Crucial BLT4G3D1608ET3LX0 @ 2000, 10-11-11-3... OCZ (Toshiba) Trion 150 120GB Hyundai Sapphire 120GB 3x Hitachi Deskstar 7k1000.C 1TB 
CoolingOSPowerCase
Noctua NH-D14 Windows 7 Pro x64 SP1 Antec TP-750 Fractal Design R5 
Audio
ASUS Xonar DS 
CPUMotherboardGraphicsRAM
i7-6800K @ 4.3/3.5GHz core/uncore, 1.36/1.2v ASRock X99 OC Formula (P3.10) GTX 780 (temporary) 4x4GiB Crucial DDR4-2400 @ 11-13-12-28-T2, 1.33v 
Hard DriveHard DriveCoolingOS
Intel 600p 256GB NVMe 2x HGST Travelstar 7k1000 1TB Corsair H55 (temporary) Windows Server 2016 Datacenter 
PowerCase
Seasonic SS-860XP2 Corsair Carbide Air 540 
  hide details  
Reply
Primary
(15 items)
 
Secondary
(13 items)
 
In progress
(10 items)
 
CPUMotherboardGraphicsRAM
5820K @ 4.2/3.5GHz core/uncore, 1.175/1.15v Gigabyte X99 SOC Champion (F22n) Gigabyte AORUS GTX 1080 Ti (F3P) @ 2025/1485, 1... 4x4GiB Crucial @ 2667, 12-12-12-28-T1, 1.34v 
Hard DriveHard DriveHard DriveCooling
Plextor M6e 128GB (fw 1.06) M.2 (PCI-E 2.0 2x) 2x Crucial M4 256GB 4x WD Scorpio Black 500GB Noctua NH-D15 
OSMonitorKeyboardPower
Windows 7 Professional x64 SP1 BenQ BL3200PT Filco Majestouch Tenkeyless (MX Brown) Corsair RM1000x 
CaseMouseAudio
Fractal Design Define R4 Logitech G402 Realtek ALC1150 + M-Audio AV40 
CPUMotherboardGraphicsRAM
X5670 @ 4.4/3.2GHz core/uncore, 1.36 vcore, 1.2... Gigabyte X58A-UD5 r2.0 w/FF3mod10 BIOS Sapphire Fury Nitro OC+ @ 1053/500, 1.225vGPU/1... 2x Samsung MV-3V4G3D/US @ 2000, 10-11-11-30-T1,... 
RAMHard DriveHard DriveHard Drive
1x Crucial BLT4G3D1608ET3LX0 @ 2000, 10-11-11-3... OCZ (Toshiba) Trion 150 120GB Hyundai Sapphire 120GB 3x Hitachi Deskstar 7k1000.C 1TB 
CoolingOSPowerCase
Noctua NH-D14 Windows 7 Pro x64 SP1 Antec TP-750 Fractal Design R5 
Audio
ASUS Xonar DS 
CPUMotherboardGraphicsRAM
i7-6800K @ 4.3/3.5GHz core/uncore, 1.36/1.2v ASRock X99 OC Formula (P3.10) GTX 780 (temporary) 4x4GiB Crucial DDR4-2400 @ 11-13-12-28-T2, 1.33v 
Hard DriveHard DriveCoolingOS
Intel 600p 256GB NVMe 2x HGST Travelstar 7k1000 1TB Corsair H55 (temporary) Windows Server 2016 Datacenter 
PowerCase
Seasonic SS-860XP2 Corsair Carbide Air 540 
  hide details  
Reply
post #13 of 13
Quote:
Originally Posted by Blameless View Post
That would only be true if efficency was 100%, which never happens. I've been able to get 96%+ efficency (in buffered reads), but only with high clocked S754 AMD chips that have a single memory channel and on-die memory controlers, that were paired with Winbond memory at rediculously tight timings.

I see quite a significant difference in memory performance on the system in my sig going from DDR-800 3-3-3-8 to DDR-1200 5-5-5-12, both at the same 400MHz FSB, with the same tRD fo 5 (the lowest possible at either setting). The DDR-1200 CL5 settings are nearly 15% faster in both read bandwidth and latency. Of course real world performance differences are less, as memory is only one part of a much larger equation, I can still see decent difference in benchmarks, and even feel a modest improvement in responsiveness (both in windows, and in games).

DDR3 with it's reduction in efficency compared to DDR2, needs higher clocks (which it has) at the same FSB to compensate.

Even NVIDIA chipsets efficency gains at 1:1 are unlikly to overcome the massive deficit in clock rate with DDR-3.



PC3-12800/DDR3-1600 is a fairly good match for a 400MHz FSB.
That's because your bandwidth isn't saturated with 1200MHz RAM and a 400MHz FSB... I think you are getting confused. At 400MHz FSB, you would need RAM to be 1600MHz (effective) before you should see little to no gain.
BladeRunner v3.0
(11 items)
 
  
CPUMotherboardGraphicsRAM
Intel Core i7-5930K @ 4.6GHz Core, 4.4GHz Cache ASUS X99 Sabertooth Sapphire R9 380 Dual-X OC G.Skill TridentZ 32GB DDR4 @ 13-15-13-33-1T 320... 
Hard DriveCoolingOSKeyboard
Samsung 850 Pro 512GB Noctua NH-D15S Windows 10 Home 64-bit Logitech G910 Orion Spark 
PowerCaseMouse
EVGA SuperNova 1000W T2 NZXT Phantom 820 Black Logitech G5 
  hide details  
Reply
BladeRunner v3.0
(11 items)
 
  
CPUMotherboardGraphicsRAM
Intel Core i7-5930K @ 4.6GHz Core, 4.4GHz Cache ASUS X99 Sabertooth Sapphire R9 380 Dual-X OC G.Skill TridentZ 32GB DDR4 @ 13-15-13-33-1T 320... 
Hard DriveCoolingOSKeyboard
Samsung 850 Pro 512GB Noctua NH-D15S Windows 10 Home 64-bit Logitech G910 Orion Spark 
PowerCaseMouse
EVGA SuperNova 1000W T2 NZXT Phantom 820 Black Logitech G5 
  hide details  
Reply
New Posts  All Forums:Forum Nav:
  Return Home
  Back to Forum: Hardware News
Overclock.net › Forums › Industry News › Hardware News › [Xtreview] OCZ DDR3 PC 3-16000 Platinum edition