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BIOS Speed Dispaly Questions

post #1 of 5
Thread Starter 
I have often wondered why the BIOS is set up this way: FSB is listed as the quad pumped value (i.e. 200 MHz FSB is listed when the total FSB is 800 MHz), but RAM is listed as the effective value from DDR2 (i.e. 400 MHz is listed even though the actual RAM speed is 200 MHz).

For me at least, this contributes to the confusion of matching the speeds to get a 1:1 ratio or better. Is there a reason why the actual speed is dispalyed for the FSB (1/4 of the effective speed) but the effective speed is displayed for the RAM (twice the actual speed)?

Also, for a 1:1 ratio, you want to match the actual speeds, right? That is, you would want DDR2 400 for when you have an 800 MHz FSB to have a 1:1 ratio. I just want to get that straight in my head.
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post #2 of 5
Well Im not sure about the RAM FSB however for the CPU FSB its 800 because as you stated its 200MHZ Quad pumped = 800.
post #3 of 5
Thread Starter 
Well anyone else have insight then?
BladeRunner v3.0
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post #4 of 5
If it says you're running at 200 FSB, for a 1:1 ratio, it should be a DDR2-400.
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#well
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Lenovo L530
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CPUMotherboardGraphicsRAM
Intel Core i7 4770k Gigabyte Z87X-UD4H Sapphire RX 580 Corsair CMX8GX3M2A2000C9 
Hard DriveOptical DriveCoolingOS
Samsung 840 EVO Generic DVD±RW Burner Noctua NH-D14 Windows 10 
MonitorMonitorKeyboardPower
Dell U2711 Samsung SyncMaster 2233 Ducky DK9008 Overclock.net Edition, Cherry MX B... Corsair TX850 
CaseMouseMouse PadAudio
Fractal Design Core 2500 Logitech G303 QPAD HeatoN L M-Audio Fast Track USB 
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Beyerdynamic DT-770 80 Ohm AntLion ModMic v3 
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post #5 of 5
Thread Starter 
OK, but does anyone know why one speed is the effective while the other is the actual? Marketing ploy?
BladeRunner v3.0
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Hard DriveCoolingOSKeyboard
Samsung 850 Pro 512GB Noctua NH-D15S Windows 10 Home 64-bit Logitech G910 Orion Spark 
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BladeRunner v3.0
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Hard DriveCoolingOSKeyboard
Samsung 850 Pro 512GB Noctua NH-D15S Windows 10 Home 64-bit Logitech G910 Orion Spark 
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