• We've upgraded our forums. Please post any issues/requests in this thread.

AMD P II 955 vs P II 940

Joined
Jan 26, 2009
Messages
488 (0.15/day)
Likes
33
#1
Hi,
i am planning to buy a p ii x4...but have one doubt. :banghead:


if i am oc'ing p ii 940 to 3.2ghz will it give the same performance of p ii 955??? :rockout:
 

erocker

Senior Moderator
Staff member
Joined
Jul 19, 2006
Messages
42,369 (10.18/day)
Likes
18,018
Processor Intel i7 8700k
Motherboard Gigabyte z370 AORUS Gaming 7
Cooling Water
Memory 16gb G.Skill 4000 MHz DDR4
Video Card(s) Evga GTX 1080
Storage 3 x Samsung Evo 850 500GB, 1 x 250GB, 2 x 2TB HDD
Display(s) Nixeus EDG27
Case Thermaltake X5
Power Supply Corsair HX1000i
Mouse Zowie EC1-B
Software Windows 10
#2
Yes, though the PII 955 has the benefit of using DDR3.
 
Joined
Dec 23, 2007
Messages
16,919 (4.65/day)
Likes
1,622
Location
Omaha, NE
System Name The ShadowFold Draconis (Ordering soon)
Processor AMD Phenom II X6 1055T 2.8ghz
Motherboard ASUS M4A87TD EVO AM3 AMD 870
Cooling Stock
Memory Kingston ValueRAM 4GB DDR3-1333
Video Card(s) XFX ATi Radeon HD 5850 1gb
Storage Western Digital 640gb
Display(s) Acer 21.5" 5ms Full HD 1920x1080P
Case Antec Nine-Hundred
Audio Device(s) Onboard + Creative "Fatal1ty" Headset
Power Supply Antec Earthwatts 650w
Software Windows 7 Home Premium 64bit
Benchmark Scores -❶-❸-❸-❼-
#4
The 955 is going to perform the same as the 940 when both are clocked the same, but the 955 overclocks higher, has a DDR3 memory controller and comes .2ghz faster(if you like running stock speeds).
 

erocker

Senior Moderator
Staff member
Joined
Jul 19, 2006
Messages
42,369 (10.18/day)
Likes
18,018
Processor Intel i7 8700k
Motherboard Gigabyte z370 AORUS Gaming 7
Cooling Water
Memory 16gb G.Skill 4000 MHz DDR4
Video Card(s) Evga GTX 1080
Storage 3 x Samsung Evo 850 500GB, 1 x 250GB, 2 x 2TB HDD
Display(s) Nixeus EDG27
Case Thermaltake X5
Power Supply Corsair HX1000i
Mouse Zowie EC1-B
Software Windows 10
#5
my mobo is m3a78 em it supports only ddr2....so thru flashing i can fix p II 955....but i have same doubt about the above (performance difference?)
a 955 will only work with an AM3 board. The performance of both CPU's at 3.2ghz are the same. The 940 has a DDR2 controller built in and the 955 has a DDR3 controller built in.
 
Joined
Dec 23, 2007
Messages
16,919 (4.65/day)
Likes
1,622
Location
Omaha, NE
System Name The ShadowFold Draconis (Ordering soon)
Processor AMD Phenom II X6 1055T 2.8ghz
Motherboard ASUS M4A87TD EVO AM3 AMD 870
Cooling Stock
Memory Kingston ValueRAM 4GB DDR3-1333
Video Card(s) XFX ATi Radeon HD 5850 1gb
Storage Western Digital 640gb
Display(s) Acer 21.5" 5ms Full HD 1920x1080P
Case Antec Nine-Hundred
Audio Device(s) Onboard + Creative "Fatal1ty" Headset
Power Supply Antec Earthwatts 650w
Software Windows 7 Home Premium 64bit
Benchmark Scores -❶-❸-❸-❼-
#6
955 works in AM2 boards too, how do you think I'm running my 720BE on an AM2 board :p
 

erocker

Senior Moderator
Staff member
Joined
Jul 19, 2006
Messages
42,369 (10.18/day)
Likes
18,018
Processor Intel i7 8700k
Motherboard Gigabyte z370 AORUS Gaming 7
Cooling Water
Memory 16gb G.Skill 4000 MHz DDR4
Video Card(s) Evga GTX 1080
Storage 3 x Samsung Evo 850 500GB, 1 x 250GB, 2 x 2TB HDD
Display(s) Nixeus EDG27
Case Thermaltake X5
Power Supply Corsair HX1000i
Mouse Zowie EC1-B
Software Windows 10
#7
Joined
Jan 26, 2009
Messages
488 (0.15/day)
Likes
33
#8
again I'm confused...hyper transport of p II 955 has 400 mhz more HT link than p II 940...will it make any difference in performance???

which proccy is more overclockable with air cooling(w/o change in voltages?)
 
Joined
Dec 23, 2007
Messages
16,919 (4.65/day)
Likes
1,622
Location
Omaha, NE
System Name The ShadowFold Draconis (Ordering soon)
Processor AMD Phenom II X6 1055T 2.8ghz
Motherboard ASUS M4A87TD EVO AM3 AMD 870
Cooling Stock
Memory Kingston ValueRAM 4GB DDR3-1333
Video Card(s) XFX ATi Radeon HD 5850 1gb
Storage Western Digital 640gb
Display(s) Acer 21.5" 5ms Full HD 1920x1080P
Case Antec Nine-Hundred
Audio Device(s) Onboard + Creative "Fatal1ty" Headset
Power Supply Antec Earthwatts 650w
Software Windows 7 Home Premium 64bit
Benchmark Scores -❶-❸-❸-❼-
#9
955 overclock quite a bit higher on stock voltage, the HT link is higher on the 955 because it's AM3 spec, but when it's in an AM2 board it will go to normal AM2 spec.
 

Jakl

New Member
Joined
Nov 18, 2008
Messages
515 (0.16/day)
Likes
50
Location
Home
System Name AMD Fun Rig | Intel Lil' Gaming Rig
Processor 720BE x4 3.4ghz 1.375v | E8400 4ghz
Motherboard Gigabyte 790FXT-UD5P | eVGA 780i
Cooling Scythe Mugen | TRUE
Memory G.Skill 2x2gb 1600 | 4x1gb Crucial 800
Video Card(s) ATI 3870 | eVGA 9800GTX
Storage 1TB Seagate | 1TB Seagate
Display(s) 24" ASUS VK246H | 28" Acer LCD TV | 40" Sony V4100
Case Lian Li | Cosmos 1000
Audio Device(s) Asus Xonar D2X | Onboard
Power Supply Thermaltake 1200W | PC Silencer 750
Software Win7 64
#10
Right, just no 940's in AM3 boards...
But does AM3 actually work with full potential? or is this a "time being solution" until AMD redesign the DDR3 controller?
 
Joined
Dec 23, 2007
Messages
16,919 (4.65/day)
Likes
1,622
Location
Omaha, NE
System Name The ShadowFold Draconis (Ordering soon)
Processor AMD Phenom II X6 1055T 2.8ghz
Motherboard ASUS M4A87TD EVO AM3 AMD 870
Cooling Stock
Memory Kingston ValueRAM 4GB DDR3-1333
Video Card(s) XFX ATi Radeon HD 5850 1gb
Storage Western Digital 640gb
Display(s) Acer 21.5" 5ms Full HD 1920x1080P
Case Antec Nine-Hundred
Audio Device(s) Onboard + Creative "Fatal1ty" Headset
Power Supply Antec Earthwatts 650w
Software Windows 7 Home Premium 64bit
Benchmark Scores -❶-❸-❸-❼-
#11
AM2 CPU's don't physically fit into AM3 socket boards.

AM2 = 940 pin
AM3 = 938 pin
 
Joined
Jan 26, 2009
Messages
488 (0.15/day)
Likes
33
#12
i have AM2+ socket in my mobo...with 940 pin....it can take a p ii 955....

which proccy is u experts choice for me?? p II 955 or 940??
 
Joined
Dec 23, 2007
Messages
16,919 (4.65/day)
Likes
1,622
Location
Omaha, NE
System Name The ShadowFold Draconis (Ordering soon)
Processor AMD Phenom II X6 1055T 2.8ghz
Motherboard ASUS M4A87TD EVO AM3 AMD 870
Cooling Stock
Memory Kingston ValueRAM 4GB DDR3-1333
Video Card(s) XFX ATi Radeon HD 5850 1gb
Storage Western Digital 640gb
Display(s) Acer 21.5" 5ms Full HD 1920x1080P
Case Antec Nine-Hundred
Audio Device(s) Onboard + Creative "Fatal1ty" Headset
Power Supply Antec Earthwatts 650w
Software Windows 7 Home Premium 64bit
Benchmark Scores -❶-❸-❸-❼-
#13
Definitely the 955
 
Joined
Jan 11, 2009
Messages
9,025 (2.77/day)
Likes
1,446
Location
Montreal, Canada
System Name Fun waste of money
Processor i7 3930k @ 4 Ghz
Motherboard AsRock X79 Fatal1ty Professional
Cooling Dark Rock Pro 3 (removed 120mm fan)
Memory 32GB (4x8gb) 2133Mhz CL9 Mushkin RedLine
Video Card(s) EVGA ACX 3.0 GTX 1060 6GB
Storage 3.25TB separated in 5 SSDs (SanDisk Extreme Pro, Intel 730 & 520, 2*Crucial MX100)
Display(s) 27" 2560x1440 [Korean] PCBANK PB2700
Case BeQuiet! SilentBase 800
Audio Device(s) iBasso D10 + AKG KXXX
Power Supply EVGA P2 750W 80+ Platinum semi-fanless
Mouse Sensei RAW
Keyboard Black cherry MX Thermaltake ESports
Software Windows 10 Pro X64
#15
No, I would pick the 940 over the 955... It's not like he would OC any of them to the max... and he'll save a lot of money going 940BE... I suggest 940BE, but I would suggest to take a look at the 720BE... if this processor is for gaming go 720BE
 
Joined
Dec 27, 2007
Messages
555 (0.15/day)
Likes
104
Location
Indiana
System Name Evil Dragon
Processor AMD FX-8320 Vishera @4.7ghz
Motherboard Asus 970 pro gaming Aura
Cooling Corsair Hydro Series H100i V2(fully Lapped). 4 40mm NB/VRM fans. 6 Thermaltake Riing 12 Series fans
Memory 2X8gig GeIL EVO Veloce Series DDR3 1600 @9.9.9.26
Video Card(s) Powercolor Red Devil RX 480 (1400/2100)
Storage PNY XLR8 480gig SSD. Patriot Pyro SE 60gig SSD.
Display(s) ASUS VP228H LED
Case Thermaltake Core V31
Audio Device(s) Onboard Realtek ALC1150 W/Creative Sound Blaster Cinema 2
Power Supply EVGA 850 BQ 110
Keyboard Roccat Isku FX
Software Win 10 Pro
#16
AM2 CPU's don't physically fit into AM3 socket boards.

AM2 = 940 pin
AM3 = 938 pin
I am confused by this.

If this is so why does my MoBo support AM2, AM2+, and AM3 CPU's?
 

erocker

Senior Moderator
Staff member
Joined
Jul 19, 2006
Messages
42,369 (10.18/day)
Likes
18,018
Processor Intel i7 8700k
Motherboard Gigabyte z370 AORUS Gaming 7
Cooling Water
Memory 16gb G.Skill 4000 MHz DDR4
Video Card(s) Evga GTX 1080
Storage 3 x Samsung Evo 850 500GB, 1 x 250GB, 2 x 2TB HDD
Display(s) Nixeus EDG27
Case Thermaltake X5
Power Supply Corsair HX1000i
Mouse Zowie EC1-B
Software Windows 10
#17
I am confused by this.

If this is so why does my MoBo support AM2, AM2+, and AM3 CPU's?
The two less pins just don't go into the socket. An AM2 processor wont fit into an AM3 board because of the two extra pins.
 
Joined
Jan 11, 2009
Messages
9,025 (2.77/day)
Likes
1,446
Location
Montreal, Canada
System Name Fun waste of money
Processor i7 3930k @ 4 Ghz
Motherboard AsRock X79 Fatal1ty Professional
Cooling Dark Rock Pro 3 (removed 120mm fan)
Memory 32GB (4x8gb) 2133Mhz CL9 Mushkin RedLine
Video Card(s) EVGA ACX 3.0 GTX 1060 6GB
Storage 3.25TB separated in 5 SSDs (SanDisk Extreme Pro, Intel 730 & 520, 2*Crucial MX100)
Display(s) 27" 2560x1440 [Korean] PCBANK PB2700
Case BeQuiet! SilentBase 800
Audio Device(s) iBasso D10 + AKG KXXX
Power Supply EVGA P2 750W 80+ Platinum semi-fanless
Mouse Sensei RAW
Keyboard Black cherry MX Thermaltake ESports
Software Windows 10 Pro X64
#18
AM3 go in AM2+ boards... A AM2+ can support AM2, AM2+ AND AM3... and I was about to say what erocker said lol... he beat me to it :rolleyes:
 
Joined
Dec 27, 2007
Messages
555 (0.15/day)
Likes
104
Location
Indiana
System Name Evil Dragon
Processor AMD FX-8320 Vishera @4.7ghz
Motherboard Asus 970 pro gaming Aura
Cooling Corsair Hydro Series H100i V2(fully Lapped). 4 40mm NB/VRM fans. 6 Thermaltake Riing 12 Series fans
Memory 2X8gig GeIL EVO Veloce Series DDR3 1600 @9.9.9.26
Video Card(s) Powercolor Red Devil RX 480 (1400/2100)
Storage PNY XLR8 480gig SSD. Patriot Pyro SE 60gig SSD.
Display(s) ASUS VP228H LED
Case Thermaltake Core V31
Audio Device(s) Onboard Realtek ALC1150 W/Creative Sound Blaster Cinema 2
Power Supply EVGA 850 BQ 110
Keyboard Roccat Isku FX
Software Win 10 Pro
#19
AM3 go in AM2+ boards... A AM2+ can support AM2, AM2+ AND AM3... and I was about to say what erocker said lol... he beat me to it :rolleyes:
So AM3 boards must have a unique socket, correct?

I ask because I can fit an AM2 and a AM3 CPU in my board.
 
Joined
Dec 23, 2007
Messages
16,919 (4.65/day)
Likes
1,622
Location
Omaha, NE
System Name The ShadowFold Draconis (Ordering soon)
Processor AMD Phenom II X6 1055T 2.8ghz
Motherboard ASUS M4A87TD EVO AM3 AMD 870
Cooling Stock
Memory Kingston ValueRAM 4GB DDR3-1333
Video Card(s) XFX ATi Radeon HD 5850 1gb
Storage Western Digital 640gb
Display(s) Acer 21.5" 5ms Full HD 1920x1080P
Case Antec Nine-Hundred
Audio Device(s) Onboard + Creative "Fatal1ty" Headset
Power Supply Antec Earthwatts 650w
Software Windows 7 Home Premium 64bit
Benchmark Scores -❶-❸-❸-❼-
#20
As I've said before, AM3 sockets have 938 pins. AM2 boards have 940 and can fit AM2 and AM3.
 
Joined
Jan 11, 2009
Messages
9,025 (2.77/day)
Likes
1,446
Location
Montreal, Canada
System Name Fun waste of money
Processor i7 3930k @ 4 Ghz
Motherboard AsRock X79 Fatal1ty Professional
Cooling Dark Rock Pro 3 (removed 120mm fan)
Memory 32GB (4x8gb) 2133Mhz CL9 Mushkin RedLine
Video Card(s) EVGA ACX 3.0 GTX 1060 6GB
Storage 3.25TB separated in 5 SSDs (SanDisk Extreme Pro, Intel 730 & 520, 2*Crucial MX100)
Display(s) 27" 2560x1440 [Korean] PCBANK PB2700
Case BeQuiet! SilentBase 800
Audio Device(s) iBasso D10 + AKG KXXX
Power Supply EVGA P2 750W 80+ Platinum semi-fanless
Mouse Sensei RAW
Keyboard Black cherry MX Thermaltake ESports
Software Windows 10 Pro X64
#21
which means that ALL AM3 processors as of now fit into an AM2+ board... ONLY Am3 processors fit in an AM3 board
 
Joined
Jan 2, 2009
Messages
731 (0.22/day)
Likes
102
Processor Intel Core i5-3470 3.2 GHz Quad-core Ivy Bridge
Motherboard ASUS P8Z77-M Z77
Cooling ID-COOLING IS-50 TDP 130W
Memory Kingston HyperX Genesis 2x4 GB DDR3 @ 1866MHz 9-11-9-27-1T
Video Card(s) ZOTAC GeForce® GTX 1070 AMP Edition (ZT-P10700C-10P)
Storage WD SiliconEdge Blue 64 GB SSD, Kingston SSDNow! 240 GB SSD, WD RE4 1 TB HDD
Display(s) LN-T4065F FullHD LCD TV
Power Supply Raidmax RX-1000AE 1000W 80 Plus Gold
Mouse Logitech G402 Hyperion Fury FPS Gaming Mouse (Defective MOUSE3)
Keyboard Logitech K120
Software Windows 10 Pro 64-bit
#22
AM3 CPUs have 938 pins
AM2/AM2+ CPUs have 940 pins

AM3 motherboards can fit 938 pins
AM2/AM2+ motherboards can fit 940 pins

AM3 can fit in AM2/AM2+ motherboards
AM2/AM2+ cannot fit in AM3 motherboards

Therefore...

AM3 is backwards compatible,
AM2/AM2+ is not upwards (???) compatible.

I have no idea what the hell I just said.
 
Joined
Oct 21, 2008
Messages
3,459 (1.04/day)
Likes
483
Location
95350
Processor ???
Motherboard 760
Cooling HK
Memory 3x1gb
Video Card(s) 285 Classified / EVGA 480
Display(s) 22" Acer /42" Toshiba
Case Stacker
Power Supply Toughpower 1000w / Coolmaster 650w
Software All of them
#23
just go with am3 futureproof yourself
 

Paintface

New Member
Joined
Jul 3, 2008
Messages
389 (0.11/day)
Likes
72
Processor E5200 @ 3.7ghz
Motherboard DFI LanParty DK P35 DARK
Cooling Zalman CPU + case cooling
Memory OCZ Reaper HPC DDR2 4GB 1066
Video Card(s) Saphire 4890 Vapor-X OCed
Storage Raptor 74GB + 640GB sata + 1TB sata ( all WD)
Display(s) BENQ 24inch LCD 1080p
Case my desk
Audio Device(s) Creative Audigy 2 ZS
Power Supply OCZ gameXstream 700w
Software Windows 7 x64 ultimate
#24
get the 940 since you use DDR2, its cheaper by a decent margin , and will OC the same, but i would simply raise the multiplier to make it go 3.4ghz on stock voltage , all you need.
 
Joined
Jan 11, 2009
Messages
9,025 (2.77/day)
Likes
1,446
Location
Montreal, Canada
System Name Fun waste of money
Processor i7 3930k @ 4 Ghz
Motherboard AsRock X79 Fatal1ty Professional
Cooling Dark Rock Pro 3 (removed 120mm fan)
Memory 32GB (4x8gb) 2133Mhz CL9 Mushkin RedLine
Video Card(s) EVGA ACX 3.0 GTX 1060 6GB
Storage 3.25TB separated in 5 SSDs (SanDisk Extreme Pro, Intel 730 & 520, 2*Crucial MX100)
Display(s) 27" 2560x1440 [Korean] PCBANK PB2700
Case BeQuiet! SilentBase 800
Audio Device(s) iBasso D10 + AKG KXXX
Power Supply EVGA P2 750W 80+ Platinum semi-fanless
Mouse Sensei RAW
Keyboard Black cherry MX Thermaltake ESports
Software Windows 10 Pro X64
#25
nono, the 955 definitively OCs a bit better, but I still say to go for the 940

#1 You don't look like someone that is going to OC terribly
#2 The OC difference is not big
#3 You'll save 55$

In conclusion, you'll get about the same performance for 55$ less!