Have I hit a memory performance wall? 3.85GHz OC

I'm new to OC'ing, but have read everything I can get my hands on to learn. I have successfully OC'd my 2.8GHz Intel E6300 Wolfdale on a Gigabyte GA-EP45-UD3P motherboard to be stable at 3.85GHz as far as my Prime95 results. I don't do games, but I do render video via Adobe AfterEffects. This took rendering a 5 minute motion graphics video project from 7 min. 39 sec. to under 5 minutes. Everything I've read, this processor seems to be pretty consistently OC'd to +4GHz. I think I've hit a wall with my potentually concervative/poor choice of lower performance memory (G.SKILL 4GB (2 x 2GB) 240-Pin DDR2 SDRAM DDR2 800 (PC2 6400). That allowed me to stable OC to 3.83GHz. I have since replaced my RAM with Patriot Viper PC2-8500 1066MHz 4GB(2 x 2GB) Kit (5-5-5-15) PVS24G8500ELKR2. I don't know the nuances to tweak the bios settings to realize optimum performance that would yield OC performance past 3.85GHz. Suggestions would be greatly appreciated. I'm kind of on a quest to prove to myself that I can successfully OC this chip/config. to +4GHz.

Here's my current config. followed by my current bios settings:

Intel Pentium E6300 Wolfdale 2.8GHz LGA 775 65W Dual-Core Processor Model BX80571E6300

GIGABYTE GA-EP45-UD3P LGA 775 Intel P45 ATX Intel Motherboard

(current RAM) Patriot Viper PC2-8500 1066MHz 4GB(2 x 2GB) Kit (5-5-5-15) PVS24G8500ELKR2

(replaced this with the Patriot Viper above) G.SKILL 4GB (2 x 2GB) 240-Pin DDR2 SDRAM DDR2 800 (PC2 6400) Dual Channel Kit Desktop Memory Model F2-6400CL5D-4GBPQ

ECS N9500GT-512MUL-F GeForce 9500 GT 512MB 128-bit DDR3 PCI Express 2.0 x16 HDCP Ready SLI Support Video Card

Cooler Master Silent Pro M1000 Modular 1000-Watt ATX Power Supply

ARCTIC COOLING Freezer 7 Pro Rev.2 92mm Fluid Dynamic CPU Cooler

LITE-ON CD/DVD Burner - Bulk Black SATA Model iHAS124-04

Western Digital Caviar Black WD7501AALS 750GB 7200 RPM SATA 3.0Gb/s 3.5" Hard Drive

COOLER MASTER HAF 932 RC-932-KKN1-GP Black Steel ATX Full Tower Computer Case

Microsoft Windows 7 Professional 64-bit

****BIOS Settings*****

Under Advanced BIOS Features
CPU Enhanced Halt (C1E) [Disabled]
C2/C2E State Support [Disabled]
CPU EIST Function [Disabled


Under MB Intelligent Tweaker (M.I.T)

Robust Graphics Booster [Auto]
CPU Clock Ratio [10 X]
Fine CPU Clock Ratio [+0.5]
CPU Frequency 3.85GHz ( 367x10.5)

********** Clock Chip Control **********
>>>>> Standard Clock Control

CPU Host Clock Control [Enabled]
CPU Host Frequency(MHz) [367]
PCI Express Frequency(MHz) [100]
C.I.A 2 [Disabled]

>>>>> Advanced Clock Control

Advanced Clock Control [Press Enter]
(note: no parameters have been adjusted here, but these are the current settings under [Press Enter])
CPU Clock Drive [800mV]
PCI Express Clock Drive [900mV]
CPU Clock Skew [ 0ps]
MCH Clock Skew [ 0ps]

********** DRAM Performance Control **********

Performance Enhance [Standard]
Extreme Memory Profile(X.M.P.) [Auto]
(G)MCH Frequency Latch [333MHz]
System Memory Multiplier (SPD) [2.00B]
Memory Frequency(MHz) 1066 734
DRAM Timing Selectable (SPD) [Manual]
>>>>> Standard Timing Control
CAS Latency Time 5 [4]
tRCD 5 [4]
tRP 5 [4]
tRAS 15 [14]

>>>>> Advanced Timing Control
Advanced Timing Control [Press Enter]
(note: no parameters have been adjusted here, but these are the current settings under [Press Enter])

tRRD 4 [Auto]
tWTR 4 [Auto]
tWR 8 [Auto]
tRFC 68 [Auto]
tRTP 4 [Auto]
Command Rate(CMD) 0 [2]

>>>>> Channel A
Channel A Timing Settings [Press Enter]
Channel A Driving Settings [Press Enter]

>>>>> Channel B
Channel B Timing Settings [Press Enter]
Channel B Driving Settings [Press Enter]

********** Mother Board Votlage Control **********
Voltage Types Normal Current
----------------------------------------------------------
>>> CPU
Load-Line Calibration [Enabled]
CPU Vcore 1.28750V [1.39375V]
CPU Termination 1.200V [Auto]
CPU PLL 1.500V [Auto]
CPU Reference 0.760V [Auto]
>>> MCH/ICH
MCH Core 1.100V [1.200V]
MCH Reference 1.760V [Auto]
MCH/DRAM Reference 0.900V [Auto]
ICH I/O 1.500V [Auto]
ICH Core 1.100V [Auto]
>>> DRAM
DRAM Voltage 1.800V [2.100V]
DRAM Termination 0.900V [Auto]
Channel A Reference 0.900V [Auto]
Channel B Reference 0.900V [Auto]