Is there any reason to have RAM faster than the CPU?clock speed?

F5F Stay Refreshed Hardware Desktop Is there any reason to have RAM faster than the CPU?clock speed?

Is there any reason to have RAM faster than the CPU?clock speed?

Is there any reason to have RAM faster than the CPU?clock speed?

G

Gamergod3927
Junior Member

43

04-29-2023, 02:57 AM

#1

I've been thinking about this too, and yes, memory can affect performance even with a fast CPU. A higher clock speed doesn't always mean better results if the RAM isn't fast enough or properly connected.

G

Gamergod3927

04-29-2023, 02:57 AM #1

I've been thinking about this too, and yes, memory can affect performance even with a fast CPU. A higher clock speed doesn't always mean better results if the RAM isn't fast enough or properly connected.

R

Rikki_Boy
Junior Member

3

05-01-2023, 02:15 AM

#2

They are handling tasks in a unique manner, and the idea that their speed depends on operating frequency isn't relevant here. For instance, a GPU running at 2GHz wouldn't gain much advantage from a CPU clocked at 4GHz.

R

Rikki_Boy

05-01-2023, 02:15 AM #2

They are handling tasks in a unique manner, and the idea that their speed depends on operating frequency isn't relevant here. For instance, a GPU running at 2GHz wouldn't gain much advantage from a CPU clocked at 4GHz.

X

xFyUZx
Member

158

05-01-2023, 09:44 AM

#3

They don’t fit the usual comparisons; in fact, 3200 MT/s memory equals 1600, meaning a 3200 stick is really just 1600. Even with that perspective, their behavior is entirely distinct.

X

xFyUZx

05-01-2023, 09:44 AM #3

They don’t fit the usual comparisons; in fact, 3200 MT/s memory equals 1600, meaning a 3200 stick is really just 1600. Even with that perspective, their behavior is entirely distinct.

D

duhazneubin
Senior Member

583

05-02-2023, 12:21 PM

#4

Yes, PCIe 3.0 operates at 8 GHz while PCIe 2.0 runs at 5 GHz. We should revert to PCIe 2.0 for better performance.

D

duhazneubin

05-02-2023, 12:21 PM #4

Yes, PCIe 3.0 operates at 8 GHz while PCIe 2.0 runs at 5 GHz. We should revert to PCIe 2.0 for better performance.

S

syhr11
Junior Member

46

05-04-2023, 08:05 AM

#5

Information doesn't move directly from RAM into a CPU's register within a single clock cycle. When RAM operates at CL14, retrieving the first bit at the desired location requires at least 14 cycles. This represents the optimal case. If the memory address differs from the active row, the total becomes tRP plus tRCD plus CL, equating to 42 cycles. Even though memory clocks are 14 times quicker than core clocks, accessing instructions from RAM remains the main limitation instead of the processor. When data isn't cached, the CPU spends most cycles idle.

S

syhr11

05-04-2023, 08:05 AM #5

Information doesn't move directly from RAM into a CPU's register within a single clock cycle. When RAM operates at CL14, retrieving the first bit at the desired location requires at least 14 cycles. This represents the optimal case. If the memory address differs from the active row, the total becomes tRP plus tRCD plus CL, equating to 42 cycles. Even though memory clocks are 14 times quicker than core clocks, accessing instructions from RAM remains the main limitation instead of the processor. When data isn't cached, the CPU spends most cycles idle.