板上大大手上如果有卡 也來PO一下
並且跟GURU那邊的RIVA TUNER一樣
PO他的REGISTER DUMP

PO的文章大致上是

名稱:MSI FX5600-128DT (8911)
記憶體:SAMSUNG K4D261638E-TC40
時脈:275/550,300/550
未改BIOS極限:380/650

$ffffffffff ---------------------------------------------------
$ffffffffff NVIDIA specific display adapter information
$ffffffffff ---------------------------------------------------
$0100000000 Graphics core : NV31 revision A1
$0100000001 Hardwired ID : 0312
$0100000002 Memory bus : 128-bit
$0100000003 Memory type : DDR (RAM configuration 01)
$0100000004 Memory amount : 131072KB
$0100000005 Core clock : 270.000MHz
$0100000006 Memory clock : 275.786MHz (551.571MHz effective)
$0100000007 Reference clock : 27.000MHz
$ffffffffff ---------------------------------------------------
$ffffffffff NVIDIA graphics processor registers
$ffffffffff ---------------------------------------------------
$0200000000 NV_PMC_BOOT_0 : 031200a1
$0200001080 NV_PBUS_DEBUG_0 : 00000000
$0200001084 NV_PBUS_DEBUG_1 : 00205749
$0200001088 NV_PBUS_DEBUG_2 : 00000222
$020000108c NV_PBUS_DEBUG_3 : 00000092
$02000010b0 NV_PBUS_DEBUG_CTRIM_0 : 00000004
$02000010b4 NV_PBUS_DEBUG_CTRIM_1 : 00000000
$02000010b8 NV_PBUS_DEBUG_CTRIM_2 : 00000000
$02000010bc NV_PBUS_DEBUG_CTRIM_3 : 00000003
$02000010c4 NV_PBUS_DEBUG_CTRIM_4 : 00000000
$02000010c8 NV_PBUS_DEBUG_CTRIM_5 : 00000088
$02000010cc NV_PBUS_DEBUG_CTRIM_6 : 02080208
$02000010e0 NV_PBUS_DEBUG_PRIV_ASRC : 00000000
$0200100000 NV_PFB_BOOT_0 : 00000000
$0200100080 NV_PFB_DEBUG_0 : f0000000
$0200100200 NV_PFB_CFG : 030f0005
$020010020c NV_PFB_CSTATUS : 08000000
$0200100220 NV_PFB_TIMING0 : 050a110f
$0200100224 NV_PFB_TIMING1 : 06010406
$0200100228 NV_PFB_TIMING2 : 00230205
$02001002c0 NV_PFB_MRS : 00000042
$02001002c4 NV_PFB_EMRS : 00100002
$0200101000 NV_PEXTDEV_BOOT_0 : a140e087
$0200680500 NV_PRAMDAC_NVPLL_COEFF : 00010401
$0200680570 NV_PRAMDAC_NVPLL_COEFF_1 : 80000501
$0200680504 NV_PRAMDAC_MPLL_COEFF : 00001a07
$0200680574 NV_PRAMDAC_MPLL_COEFF_1 : 80000b02
$020068050c NV_PRAMDAC_PLL_COEFF_SELECT : 10000700

---PO以上就好-------------
可以注意到
NV_PFB_TIMING0 : 050a110f
NV_PFB_TIMING1 : 06010406
NV_PFB_TIMING2 : 00230205

K4D261638E-TC2A
Frequency Cas Latency tRC tRFC tRAS tRCDRD tRCDWR tRP tRRD tDAL Unit
350MHz ( 2.86ns ) 4 15 17 10 4 2 5 3 8 tCK
300MHz ( 3.3ns ) 4 15 17 10 4 2 5 3 8 tCK
275MHz ( 3.6ns ) 4 15 17 10 4 2 5 3 8 tCK
250MHz ( 4.0ns ) 3 13 15 9 4 2 4 3 7 tCK
200MHz ( 5.0ns ) 3 12 14 8 4 2 4 3 7 tCK

大致上可以看到記憶體一些設定

最好有用2.8v伏特DDR的顯示卡
如SAMSUNG K4D261638E-TC2A這個TC2A就是2.8V的

另外 NV_PFB_TIMING1 : 06010406
裡面的04就是CL值
要改BIOS 請把他數字變成 06040106
也就是low-endian(?)(AABBCCDD->DDCCBBAA)
就應該可以尋找到