Cpu/lcd/ram Tweaker Version 2.0

[Emu&Co]

My MAX Timings for MK1's RAM. This is the maximum without losing MAX CPU Clock (+300MHz). For all the others out there, try the values in the () s

CAS 2 -> 2 OK
tRC 8 -> 7 OK (6 stable till ~260 MHz)
tRAS 16 -> 4 OK (3 stable till ~250 MHz)
tWR 3 -> 1 OK
tMRD 8 -> 1 OK
tRFC 8 -> 1 OK
tRP 8 -> 2 OK (1 stable till ~250 MHz)
tRCD 8 -> 2 OK

Refresh Period: 257 -> 507 OK

I did not try this on MK2, so be careful.

 

[xinfernoofdantex]

only program i ever overclock is gngeo2x to 240, no higher.it gives me around 30 frames on samurai showdown 5

 

[fasttimes]

Hmm, well I don't think think most of the memory settings are doing anything. I can run both CPU tests (both prime and ant) at the following settings up to 290Mhz stable. Things get strange at 295MHz:

CAS 2 (default)
tRC 8 -> 1
tRAS 16 -> 1
tWR 3 -> 1
tMRD 8 -> 1
tRFC 8 -> 1
tRP 8 -> 1
tRCD 8 -> 1
Refresh Period: 257 (default)

If I use the same settings above, but bump up the Refresh Period to 507, I can only get to 285 Mhz stable in the CPU tests. :huh:

Are these memory settings actually doing anything (except for Refresh Period), or are the CPU tests just not able to test correctly, or do I have super RAM?! B)

 

[god_at_hell]

1.
these are ram-timings, but the cpu-tests doesn't do anything with the RAM. Ergo ... there can not be any big performance gain.

2.
The RAM-Timings are only set when you leave the menu with select or use a script... The settings aren't set when starting a speedtest.
To use the RAM-tinings in the tests do this:
- Start the Tweaker
- set the timings
- exit with select
- start the tweaker again and run a speedtest

 

[fasttimes]

- exit with select
- start the tweaker again and run a speedtest

Ah! Exiting tweaker was the missing step. :rolleyes: Thanks G_A_H. I'll get to testing right away!

 

[fasttimes]

My MAX Timings for MK1's RAM.
CAS 2 -> 2 OK
tRC 8 -> 7 OK (6 stable till ~260 MHz)
tRAS 16 -> 4 OK (3 stable till ~250 MHz)
tWR 3 -> 1 OK
tMRD 8 -> 1 OK
tRFC 8 -> 1 OK
tRP 8 -> 2 OK (1 stable till ~250 MHz)
tRCD 8 -> 2 OK
Refresh Period: 257 -> 507 OK

Just to follow up after doing testing on a MK2 unit. Here my timings for my 280MHz overclocking:

CAS 2 -> 2 OK
tRC 8 -> 6 OK (5 stable at 200Mhz)
tRAS 16 -> 1 OK
tWR 3 -> 1 OK
tMRD 8 -> 1 OK
tRFC 8 -> 1 OK
tRP 8 -> 2 OK
tRCD 8 -> 2 OK
Refresh Period: 257 -> 467 OK

tRC, tRAS, and Refresh Period seem to be the ones that vary the most between units.
Tested in SquidgeSNES, Gngeo2x, MAME, Quake, Doom, Duke Nukem 3D, and others.

My conclusion is MK2 RAM isn't all that bad! B)