I have a Gigabyte GA-8SIML motherboard and I am unsure of what processors I would be able to use, as the current intel celeron 2.5GHz isn't enough, I would like to know if duo core processors would be compatible, at the moment I am thinking of upgrading to just a intel duo 1.8GHz or a celeron 3.2GHz, if both are comptable which one would be the best?

Edit: other system specs; 768mb DDR 333mhz ram
Geforce 6200 256mb graphics

Also can the PCI slots be used for graphics cards?

Motherboard:
Motherboard Properties:
Motherboard ID 62-1029-001199-00101111-040201-SiS650$NECC000_8SIMLNF V1.0I
Motherboard Name Gigabyte GA-8SIML

Front Side Bus Properties:
Bus Type Intel NetBurst
Bus Width 64-bit
Real Clock 100 MHz (QDR)
Effective Clock 400 MHz
Bandwidth 3200 MB/s

Chipset Bus Properties:
Bus Type SiS MuTIOL
Bus Width 16-bit

Motherboard Physical Info:
CPU Sockets/Slots 1
Expansion Slots 3 PCI, 1 AGP, 1 CNR
RAM Slots 2 DIMM
Integrated Devices Audio, Video, LAN
Form Factor Micro ATX
Motherboard Size 230 mm x 240 mm
Motherboard Chipset SiS650
Extra Features EasyTune III

This board takes a Socket 478 cpu. Celeron Ds are also available for Socket 478 and are the only CPUs still made for the socket. They use a quad-pumped 133 MHz bus giving a 533 MT/s FSB. They are available with 256 KB L2 Cache and are built on the 90 nm manufacturing process, using the Prescott core.

That doesn't quite help me out, as I don't understand what the MT/s FSB means and I don't know what a prescott core is, thanks anyway il have a look round Google at the specs and prices of celeron D's

I have found a Intel® Celeron® Processor 400 Sequence 420 for £23 is there anything else that is better than the celeron D?
Product Type
Processor
Processor

Type / Form Factor
Intel Celeron 430
64-bit Computing
Yes
Processor Qty
1
Clock Speed
1.8 GHz
Bus Speed
800 MHz
Compatible Processor Socket
LGA775 Socket
Manufacturing Process
65 nm
Thermal Design Power
35 W
Thermal Specification
60.4 °C
Architecture Features
Execute Disable Bit capability, Intel 64 Technology
Cache Memory

Installed Size
L2 Cache - 512 KB
Expansion / Connectivity

Compatible Slots
1 x processor - LGA775 Socket
I also found a 2GHz version of the one above for £40 incl VAT
I also found this, would these be compatible with my current motherboard, and which is the best? (meaning fastest for gaming etc) the celeron D 352 costs £33
Processor
Type / Form Factor
Intel Celeron D 352
64-bit Computing
Yes
Processor Qty
1
Clock Speed
3.2 GHz
Bus Speed
533 MHz
Compatible Processor Socket
LGA775 Socket
Manufacturing Process
65 nm
Architecture Features
Streaming SIMD extensions 3, Intel 64 Technology
Cache Memory

Installed Size
L2 Cache - 512 KB
Type
Advanced Transfer Cache
Expansion / Connectivity

Compatible Slots
1 x processor - LGA775 Socket

Also are celeron E dual core processors comptable

As I posted a few posts and the questions are all over the place I decided to post a list of the questions to make it easier
1. can pci slots be used for graphics card?
2.are Celeron E dual core processors compatible with my motherboard
3. which of the 2 Celeron D processors is better, the 3.2GHz at 533mhz or a 2ghz at 800mhz

Yes you can use pci for video cards,but it would be better to use the agp or pci express slots. Also,the cpu you listed above is the wrong socket, you listed a 775. Becareful

Thanks, didn't notice the socket, didn't come across any celerons with a 478 either.

Edit;nope can't find any processors with a 478 socket on a particular site, il have a look around or just buy new motherboard, probably will mean new ram aswel which I haven't got money for, thanks anyway

DDR SDRAM, DDR II SDRAM
RAM Installed ( Max )
0 MB / 2 GB (max)
Supported RAM Speed
PC2100, PC2700, PC2-3200, PC2-4300, PC2-5300
Does that pc2100 etc etc mean I wouldn't be able to use a normal ram card like mine are, DDR 333mhz ?

So which is better 1.8Ghz at 800mhz or a 3.2GHz at 533mhz?