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Newbie Tom
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 Posted: Sat Jan 18, 2020 7:09 pm Post subject: Upgrading CPU on a TOSHIBA LAPTOP Satellite L655-S510 |
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Hello All -I'm new to the topic of replacing / upgrading a CPU and I'm looking for some help in making the right choice.
Below are some of the details of what I'm working with, but I'm sure I've left out key details. If I need to supply a missing detail I'll need some help on how to find that/those details.
Thank you for sharing your time and talent.
TOSHIBA LAPTOP Satellite L655-S510
Model PSK2CU-01YO1U
CPU
Intel Pentium P6100 @ 2.00GHz 53 °C
Arrandale 32nm Technology
Motherboard
Manufacturer Intel Corp.
Model Base Board Product Name (CPU)
Version Base Board Version
Chipset Vendor Intel
Chipset Model Havendale/Clarkdale Host Bridge
Chipset Revision 02
Southbridge Vendor Intel
Southbridge Model HM55
Southbridge Revision 05
BIOS
Brand INSYDE
Version 2.80
Date 7/3/2012
In case it matters, I am also planning on (but have not yet bought) upgraded RAM and SSD.
RAM - crucial
CT250MX500SSD1
SSD - crucial
CT250MX500SSD1 |
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svmlegacy
Joined: 15 Jun 2016
Posts: 551
Location: Canada
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| Posted: Sun Jan 19, 2020 3:07 am Post subject: |
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I have a very similar laptop. Best CPU is a Core i7-640M, any socket G1 (uPGA-988A) dual core CPU will work (Not i7-7XX, i7-8XX, i7-9XX)
Something to note on this platform, 16 GB of RAM (2x8GB) doesn't work, it will load BIOS but will bluescreen booting the OS. Seems to be a memory controller limitation. |
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Calbris
Joined: 06 Feb 2019
Posts: 157
Location: Singapore
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| Posted: Sun Jan 19, 2020 6:32 am Post subject: RE: Upgrading CPU on a TOSHIBA LAPTOP Satellite L655-S510 |
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This is your Satellite L655's BIOS microcode dump:
| Code: | CPUID=20652 Rev=0C 2010/06/10 CRC=1E7BD02B Off=3FB000 Size=1C00 Plat=1,4
CPUID=20655 Rev=02 2010/03/01 CRC=267E87FF Off=3FCC00 Size=800 Plat=1,4,7
CPUID=20651 Rev=FFFF0012 2009/07/23 CRC=7D62F211 Off=3FD400 Size=1400 Plat=0,1,4
CPUID=106E5 Rev=04 2010/04/05 CRC=F7762473 Off=3FE800 Size=1800 Plat=0,1,4
CPUID=20650 Rev=FFFF0008 2009/02/18 CRC=41248CB2 Off=400000 Size=1400 Plat=0,1,4
CPUID=106E3 Rev=FFFF0006 2009/02/27 CRC=79E1C091 Off=401400 Size=C00 Plat=0,1,4
CPUID=106F1 Rev=FFFF0007 2009/02/10 CRC=4D02492B Off=402000 Size=2800 Plat=0,1,4
CPUID=106E1 Rev=FFFF000D 2009/02/06 CRC=30FA4231 Off=404800 Size=3000 Plat=0,1,4
CPUID=106E0 Rev=FFFF001F 2008/12/15 CRC=6208AF28 Off=407800 Size=2C00 Plat=0,1,4 |
Your Satellite L655's BIOS has the necessary microcode needed for a Clarksfield (first generation mobile Core i7) to work, but I don't know if the APIC table supports it.
Download Read & Write Everything v1.7 from this website, then run it and click on the 'ACPI' icon on the top portion of the screen. You should see a window popping up that shows a couple of tabs with differing names, but the tab that you should be looking for is the APIC tab. Click on the APIC tab and look for an entry called 'Processor Local APIC Structure'.
For a 720QM, 740QM, 820QM, 840QM, 920XM, and the 940XM to work properly without having 4 missing threads, it must have at least 8 entries of the 'Processor Local APIC structure' showing up in the APIC table (8 entries = 4 cores / 8 threads). An easier way to find this out is to check the highest 'ACPI Processor ID' number. If it shows up to 4 entries (4 threads supported), which should be seen as 'ACPI Processor ID 0x03', you can't upgrade to any of these Clarksfield processors. However, if it shows up to 8 entries (8 threads supported) which should be seen as 'ACPI Processor ID 0x07', you can but it is not guaranteed.
An additional bonus with a Clarksfield processor, is support for 8 GiB DDR3 SO-DIMMs. This is unlike the Arrandale processors (which are dual-cores such as the P4600, P6300, 390M, 580M, 640M) which do not support 8 GiB DDR3 SO-DIMMs and will trigger a kernel panic in Linux or a BSoD in Windows if it attempts to read memory addresses located above 4 GiB on a 8 GiB DDR3 SO-DIMM.
If you do not have 8 entries in your BIOS' APIC table, I would suggest a 640M as svmlegacy has stated it to be the fastest dual-core CPU for this socket.
_________________
CPU-World: Errors & Updates - https://www.cpu-world.com/forum/viewtopic.php?t=26667
Intel & AMD QS/ES Details - https://www.cpu-world.com/forum/viewtopic.php?t=36609
Info about rate limits on CPU-World - https://www.cpu-world.com/info/site/pv_limit.html
Last edited by Calbris on Wed May 15, 2024 9:16 am; edited 3 times in total |
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svmlegacy
Joined: 15 Jun 2016
Posts: 551
Location: Canada
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| Posted: Sun Jan 19, 2020 9:36 am Post subject: |
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| An additional note: Clarksfield processors (Quad Core) require a dedicated GPU - They do not have any form of internal graphics. |
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Newbie Tom
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| Posted: Mon Jan 20, 2020 1:27 pm Post subject: Upgrading CPU on a TOSHIBA LAPTOP Satellite L655-S510 |
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To all:
I have a typo in my original post. I listed the part number for the SSD twice. Here is the missing part number for the RAM I am thinking of upgrading to:
CT2KIT51264BF160B
Have I selected the correct RAM for these CPU choices? Should I be considering a different choice?
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To svmlegacy
Thank you for your reply.
When replacing the CPU will I need to make other changes to the Laptop, for example, BIOS settings, other software/hardware changes, or is this just a pull out/put in hardware replacement?
In terms of the Clarksfield (940XM) how can I tell if I have or need to add/upgrade the GPU?
In terms of costs and performance, it looks like the 940XM costs about $499 and the Core i7-640M cost about $189. Would the performance difference be worth the extra money?
Overheating?
I've read some reviews of the 940XM where users report their laptop's cooling fan running at high speed much of the time after they upgraded to it. Am I risking overheating the Laptop if I upgrade to any of these faster CPUs?
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To Calbris
Thank you for your reply.
If I'm reading this correctly, I think it looks like it has 8.
The Read & Write Everything v1.7 ACPI tab shows these results:
Multiple APIC Description Table: 0x00000000BB7FA000
41 50 49 43 8C 00 00 00 02 B1 54 4F 53 51 43 49 APIC......TOSQCI
54 4F 53 51 43 49 30 30 01 00 00 00 4D 53 46 54 TOSQCI00....MSFT
13 00 00 01 00 00 E0 FE 01 00 00 00 00 08 01 00 ................
01 00 00 00 00 08 02 04 01 00 00 00 00 08 03 00 ................
00 00 00 00 00 08 04 00 00 00 00 00 00 08 05 00 ................
00 00 00 00 00 08 06 00 00 00 00 00 00 08 07 00 ................
00 00 00 00 00 08 08 00 00 00 00 00 01 0C 02 00 ................
00 00 C0 FE 00 00 00 00 02 0A 00 00 02 00 00 00 ................
00 00 02 0A 00 09 09 00 00 00 0D 00 ............
Signature "APIC"
Length 0x0000008C (140)
Revision 0x02 (2)
Checksum 0xB1 (177)
OEM ID "TOSQCI"
OEM Table ID "TOSQCI00"
OEM Revision 0x00000001 (1)
Creator ID "MSFT"
Creator Revision 0x01000013 (16777235)
Local APIC 0xFEE00000
Flags 0x00000001
Dual-8259 1 - Yes
Processor Local APIC Structure
Type 0x00 (0)
Length 0x08 ( 8 )
ACPI Processor ID 0x01 ( 1 )
APIC ID 0x00 (0)
Flags 0x00000001 (1) - Enabled
Processor Local APIC Structure
Type 0x00 (0)
Length 0x08 ( 8 )
ACPI Processor ID 0x02 ( 2 )
APIC ID 0x04 (4)
Flags 0x00000001 (1) - Enabled
Processor Local APIC Structure
Type 0x00 (0)
Length 0x08 ( 8 )
ACPI Processor ID 0x03 ( 3 )
APIC ID 0x00 (0)
Flags 0x00000000 (0) - Disabled
Processor Local APIC Structure
Type 0x00 (0)
Length 0x08 ( 8 )
ACPI Processor ID 0x04 ( 4 )
APIC ID 0x00 (0)
Flags 0x00000000 (0) - Disabled
Processor Local APIC Structure
Type 0x00 (0)
Length 0x08 ( 8 )
ACPI Processor ID 0x05 ( 5 )
APIC ID 0x00 (0)
Flags 0x00000000 (0) - Disabled
Processor Local APIC Structure
Type 0x00 (0)
Length 0x08 ( 8 )
ACPI Processor ID 0x06 ( 6 )
APIC ID 0x00 (0)
Flags 0x00000000 (0) - Disabled
Processor Local APIC Structure
Type 0x00 (0)
Length 0x08 ( 8 )
ACPI Processor ID 0x07 ( 7 )
APIC ID 0x00 (0)
Flags 0x00000000 (0) - Disabled
Processor Local APIC Structure
Type 0x00 (0)
Length 0x08 ( 8 )
ACPI Processor ID 0x08 ( 8 )
APIC ID 0x00 (0)
Flags 0x00000000 (0) - Disabled
I/O APIC Structure
Type 0x01 (1)
Length 0x0C (12)
I/O APIC ID 0x02 (2)
Reserved 0x00 (0)
I/O APIC Address 0xFEC00000
System Interrupt Base 0x00000000 (0)
Interrupt Source Override Structure
Type 0x02 (2)
Length 0x0A (10)
Bus 0x00 (0) - ISA
Source IRQ0
System Interrupt 0x00000002 (2)
Flags 0x0000
Polarity 0x00 - Conforms to the specifications of the bus
Trigger Mode 0x00 - Conforms to the specifications of the bus
Interrupt Source Override Structure
Type 0x02 (2)
Length 0x0A (10)
Bus 0x00 (0) - ISA
Source IRQ9
System Interrupt 0x00000009 (9)
Flags 0x000D
Polarity 0x01 - Active high
Trigger Mode 0x03 - Level triggered |
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crazybubba64
Joined: 03 Jul 2018
Posts: 1371
Location: WI, USA
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| Posted: Mon Jan 20, 2020 1:42 pm Post subject: Re: Upgrading CPU on a TOSHIBA LAPTOP Satellite L655-S510 |
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| Newbie Tom wrote: |
When replacing the CPU will I need to make other changes to the Laptop, for example, BIOS settings, other software/hardware changes, or is this just a pull out/put in hardware replacement?
In terms of the Clarksfield (940XM) how can I tell if I have or need to add/upgrade the GPU?
In terms of costs and performance, it looks like the 940XM costs about $499 and the Core i7-640M cost about $189. Would the performance difference be worth the extra money?
Overheating?
I've read some reviews of the 940XM where users report their laptop's cooling fan running at high speed much of the time after they upgraded to it. Am I risking overheating the Laptop if I upgrade to any of these faster CPUs?
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Sorry to butt-in, but I'd like to share my thoughts on this.
There is no model of Satellite L655-S510 with a dedicated GPU. This means your best option for clock speed is the i7-640M. Your system will not support the quad-cores, as there is no practical way of upgrading the GPU* and the mainboard might lack the power delivery components needed for the quad-core chips.
*unless you REALLY want to run a mini-pcie to full pcie x16 adapter ribbon monstrosity with an external power supply
Also, the prices you mentioned seem very high to me. Are those prices in USD? (assuming you are in US/Canada) i7-640M's can be had for ~$40 USD on eBay. Amazon sellers tend to gouge prices heavily on older parts (seems there isn't as much competition on Amazon?), so you should stick to eBay (or otherwise) for these older CPUs.
Also if you are fine with throwing $189-$500 at the problem, it may be time to consider picking up a nice used laptop. ~$500 can get you a used Dell Precision / HP ZBook workstation laptop on eBay with a quad-core i7, dedicated GPU, and probably an SSD. ~$200 can get something without a GPU but still much faster than your current machine.
_________________
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svmlegacy
Joined: 15 Jun 2016
Posts: 551
Location: Canada
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| Posted: Mon Jan 20, 2020 2:40 pm Post subject: |
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The RAM you selected looks very similar to my upgrade, and as far as I can tell, should work. Upgrading to the i7-640M (Which I would reccomend) is a CPU replacement only. If you run Windows, make sure to reboot after the initial boot of the OS on the new CPU, to allow for windows to adjust itself.
I bought mine just a few months ago for ~ 50 CAD, on eBay.
My laptop is a Satellite C650 series, for reference. |
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Newbie Tom
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| Posted: Mon Jan 20, 2020 5:23 pm Post subject: Upgrading CPU on a TOSHIBA LAPTOP Satellite L655-S510 |
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To crazybubba64
Thank you for the insights on price and choices. Very helpful on the ebay vs Amazon prices.
To svmlegacy
An extra thank you for the detailed information.
Wish me luck. |
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