Overclock.net › Forums › Intel › Intel CPUs › CPU's and the Speed of Light
New Posts  All Forums:Forum Nav:

CPU's and the Speed of Light

post #1 of 8
Thread Starter 
I found this on the Ars Technica forums and thought it was cool

Quote:
The speed of light is 300 million meters per second. Therefore light crosses one meter in about 1/300,000,000th of a second, which is 3ns -- or roughly 1ns per foot.

A modern quad-core CPU running at 3GHz, assuming each core is swallowing two instructions per cycle, processes 8 instructions every 0.33ns.

It is processing a couple of dozen instructions in the time it takes the light to get from your monitor to your eye.

Is it just me, or is that kind of cool?

(it also hints that it wont be long before engineers are running up against the speed of light in all sorts of places)
Linkie

Note that ops/cycle != instructions/cycle
It goes to eleven
(13 items)
 
  
CPUMotherboardGraphicsRAM
E6300 DS3 EVGA 8600GTS 2GB XMS2 DDR2-800 
Hard DriveOSMonitorKeyboard
1.294 TB Arch Linux/XP Samsung 226bw Eclipse II 
PowerCaseMouse
Corsair 520HX Lian-Li v1000B Plus G7 
  hide details  
Reply
It goes to eleven
(13 items)
 
  
CPUMotherboardGraphicsRAM
E6300 DS3 EVGA 8600GTS 2GB XMS2 DDR2-800 
Hard DriveOSMonitorKeyboard
1.294 TB Arch Linux/XP Samsung 226bw Eclipse II 
PowerCaseMouse
Corsair 520HX Lian-Li v1000B Plus G7 
  hide details  
Reply
post #2 of 8
lol i read it wrong... i thought it said ms... that cant be right!

quite interesting, mind blowing current technology.
beast iv
(11 items)
 
Gateway FX 6860
(13 items)
 
 
CPUMotherboardGraphicsRAM
Intel i7 920 c0 @ 4.0ghz eVGA x58 SLI 2x EVGA GTX670 SLI OCZ Gold 6gb 1600mhz 
Hard DriveHard DriveCoolingOS
Patriot Inferno 120gb SSD Seagate Barracuda LP 2tb Corsair H100 Win7 Ultimate x64 
MonitorPowerCase
Samsung 245BW Corsair AX1200 CM 690 II 
CPUGraphicsRAMHard Drive
T5550 8800m GTS 4gb ddr2 667mhz 320gb 5400rpm 
Monitor
17 in 1440x900 
  hide details  
Reply
beast iv
(11 items)
 
Gateway FX 6860
(13 items)
 
 
CPUMotherboardGraphicsRAM
Intel i7 920 c0 @ 4.0ghz eVGA x58 SLI 2x EVGA GTX670 SLI OCZ Gold 6gb 1600mhz 
Hard DriveHard DriveCoolingOS
Patriot Inferno 120gb SSD Seagate Barracuda LP 2tb Corsair H100 Win7 Ultimate x64 
MonitorPowerCase
Samsung 245BW Corsair AX1200 CM 690 II 
CPUGraphicsRAMHard Drive
T5550 8800m GTS 4gb ddr2 667mhz 320gb 5400rpm 
Monitor
17 in 1440x900 
  hide details  
Reply
post #3 of 8
Very neat. I'm going to save this!

~B~
2010 MBP 15"
(13 items)
 
  
CPUGraphicsRAMHard Drive
INTEL CORE i5 520M nVIDIA GEFORCE GT 330M 8GB DDR3 @ 1066MHz SEAGATE MOMENTUS XT 500GB 
Optical DriveMonitor
SUPERDRIVE 15.4" @ 1440x900 
  hide details  
Reply
2010 MBP 15"
(13 items)
 
  
CPUGraphicsRAMHard Drive
INTEL CORE i5 520M nVIDIA GEFORCE GT 330M 8GB DDR3 @ 1066MHz SEAGATE MOMENTUS XT 500GB 
Optical DriveMonitor
SUPERDRIVE 15.4" @ 1440x900 
  hide details  
Reply
post #4 of 8
It's amazing with you can do with technology today...
    
CPUMotherboardGraphicsRAM
Opteron 1354 x4 @ 2.6 Foxconn A7GM-S EVGA GTX 260 896mb 2 x 2GB Patriot Extreme 800mhz 
Hard DriveOptical DriveOSMonitor
WD 320GB SATA Sony DVD/CD writer/reader Windows 7 Ultimate x64 Hanns-G 19" 1440x900 
KeyboardPowerCaseMouse
Razer Lycosa BFG 650w Antec Performance-Plus full-tower Logitech Optical 
Mouse Pad
Black 
  hide details  
Reply
    
CPUMotherboardGraphicsRAM
Opteron 1354 x4 @ 2.6 Foxconn A7GM-S EVGA GTX 260 896mb 2 x 2GB Patriot Extreme 800mhz 
Hard DriveOptical DriveOSMonitor
WD 320GB SATA Sony DVD/CD writer/reader Windows 7 Ultimate x64 Hanns-G 19" 1440x900 
KeyboardPowerCaseMouse
Razer Lycosa BFG 650w Antec Performance-Plus full-tower Logitech Optical 
Mouse Pad
Black 
  hide details  
Reply
post #5 of 8
Pfft, relying on the speed of light is old technology. Quantum computing is the way to go.
McCallister
(19 items)
 
  
CPUMotherboardGraphicsRAM
AMD A8-5600K Trinity Asus F2a85-M Pro XFX Core Edition FX-785A-CNL4 Radeon HD7850 Crucial Ballistix Tactical Tracer BLT4G3D1608DT... 
Hard DriveHard DriveHard DriveOS
OCZ Vertex SSD Samsung EcoGreen F4 ST2000DL004 Samsung Spinpoint T Series HD501LJ Windows 7 Professional 
MonitorMonitorMonitorMonitor
Samsung UN40ES7500 Dell ST2210 Dell Ultrasharp 1800FP Samsung SyncMaster 170N 
KeyboardPowerCaseMouse
Das Keyboard DASK3ULTMS1 PC Power and Cooling Silencer Mk II 950W 80PLUS... Thermaltake M9 Razer Naga 
AudioOtherOther
Logitech Z506 5.1 Surround Sound Speakers SNT SNT-SAC3051TL Logitech G13 Gameboard 
  hide details  
Reply
McCallister
(19 items)
 
  
CPUMotherboardGraphicsRAM
AMD A8-5600K Trinity Asus F2a85-M Pro XFX Core Edition FX-785A-CNL4 Radeon HD7850 Crucial Ballistix Tactical Tracer BLT4G3D1608DT... 
Hard DriveHard DriveHard DriveOS
OCZ Vertex SSD Samsung EcoGreen F4 ST2000DL004 Samsung Spinpoint T Series HD501LJ Windows 7 Professional 
MonitorMonitorMonitorMonitor
Samsung UN40ES7500 Dell ST2210 Dell Ultrasharp 1800FP Samsung SyncMaster 170N 
KeyboardPowerCaseMouse
Das Keyboard DASK3ULTMS1 PC Power and Cooling Silencer Mk II 950W 80PLUS... Thermaltake M9 Razer Naga 
AudioOtherOther
Logitech Z506 5.1 Surround Sound Speakers SNT SNT-SAC3051TL Logitech G13 Gameboard 
  hide details  
Reply
post #6 of 8
Does anyone else have a problem with the simple analysis of the situation? I'm confused because if this is true, we'd see no improvement going to clock speeds that exceed the time it takes for electrons to travel through the conductive material--except we're already surpassing this barrier by the person's analysis of the situation, yet we keep seeing improvements in benchmarks (perhaps I'm not being too clear here).

What about latencies, skipped cycles, etc--I dunno here, seems a bit too simplistic of a method of thinking... But then again, optical circuits are being pursued, which is quite interesting--but not because we're nearing the "speed of light limit" in circuits, only that it takes more time to electrically compute something as opposed to optically computing something (which is theoretical at this point).
    
CPUMotherboardGraphicsRAM
i5-2500K Biostar TP67B+ XFX HD5750 1GB 2x4GB DDR3 Corsair 1600 
Hard DriveOSMonitorPower
60GB OCZ SSD, 2x160GB HDD RAID0, 500GB+500GB+1.5TB Windows 7 Ultimate 64-bit Samsung SyncMaster 930B Antec SmartPower 450w 
Case
Antec 900 
  hide details  
Reply
    
CPUMotherboardGraphicsRAM
i5-2500K Biostar TP67B+ XFX HD5750 1GB 2x4GB DDR3 Corsair 1600 
Hard DriveOSMonitorPower
60GB OCZ SSD, 2x160GB HDD RAID0, 500GB+500GB+1.5TB Windows 7 Ultimate 64-bit Samsung SyncMaster 930B Antec SmartPower 450w 
Case
Antec 900 
  hide details  
Reply
post #7 of 8
i am going laugh my self insane if the first thing to crack the light barrier
is a next gen processor.
my new system.
(13 items)
 
  
CPUMotherboardGraphicsRAM
e8200 2.66@1333 GA-P35-S3G MSI 9800gt oc edtion Wintec AMPX 1066 2gigs 
Hard DriveOptical DriveOSMonitor
WD 160gig 16mb cache LG DVD/CD RW win XP pro with sp2 Sylvania 32" HDTV 
KeyboardPowerCaseMouse
AOpen antec 480 watt Antec 300 logitech Optical 
Mouse Pad
old 
  hide details  
Reply
my new system.
(13 items)
 
  
CPUMotherboardGraphicsRAM
e8200 2.66@1333 GA-P35-S3G MSI 9800gt oc edtion Wintec AMPX 1066 2gigs 
Hard DriveOptical DriveOSMonitor
WD 160gig 16mb cache LG DVD/CD RW win XP pro with sp2 Sylvania 32" HDTV 
KeyboardPowerCaseMouse
AOpen antec 480 watt Antec 300 logitech Optical 
Mouse Pad
old 
  hide details  
Reply
post #8 of 8
nice fun facts.
Ivy Bridge
(15 items)
 
  
CPUMotherboardGraphicsRAM
3770k Gigabyte GA-Z77X-UD5H ASUS GTX670-DC2-2GD5 G.Skill 
Hard DriveCoolingOSMonitor
Samsung 830 128Gb Raystorm Win7 Ultimate 64bit Asus LED 24" 
KeyboardPowerCaseMouse
Steelseries G6V2 600w ModXstealth  CM 690 II advance Nvidia Steelseries IKARI Lazer 
Mouse PadAudio
Steelseries QcK Creative Sound Blaster X-Fi Titanium HD 
  hide details  
Reply
Ivy Bridge
(15 items)
 
  
CPUMotherboardGraphicsRAM
3770k Gigabyte GA-Z77X-UD5H ASUS GTX670-DC2-2GD5 G.Skill 
Hard DriveCoolingOSMonitor
Samsung 830 128Gb Raystorm Win7 Ultimate 64bit Asus LED 24" 
KeyboardPowerCaseMouse
Steelseries G6V2 600w ModXstealth  CM 690 II advance Nvidia Steelseries IKARI Lazer 
Mouse PadAudio
Steelseries QcK Creative Sound Blaster X-Fi Titanium HD 
  hide details  
Reply
New Posts  All Forums:Forum Nav:
  Return Home
  Back to Forum: Intel CPUs
Overclock.net › Forums › Intel › Intel CPUs › CPU's and the Speed of Light