IBM Think Center S50: 8183 Motherboard

 Motherboard Specifications
CPU Interface Socket-478
Chipset Intel 82865PE MCH (North Bridge)
Intel ICH5 (South Bridge)
Bus Speeds Not Adjustable
AGP/PCI Speeds Not Adjustable
Core Voltages Supported Not Adjustable
AGP Voltages Supported Not Adjustable
DRAM Voltages Supported Not Adjustable
Memory Slots 2 x 184-pin DDR DIMM Slots
DDR320 only
Expansion Slots 2 PCI Slot
Onboard Graphics Intel 865G Extreme Graphics 2
Onboard RAID None
Onboard USB 2.0/IEEE-1394 Eight USB 2.0 supported through ICH5
No Firewire
Onboard LAN Intel PRO/100 (Pro/1000 Optional)
Onboard Audio SoundMAX Cadenza (ADI1981B)
Onboard Serial ATA 2 SATA drives supported by Intel ICH5

The Corporate Desktop is not where would you expect to find overclocking options, and there are none available on the Think Center S50. A few of the IBM decisions, though, need some explaining. While we suspect that IBM chose DDR333 for maximum stability in the S50, the Intel 865 chipset limits actual memory performance to DDR320. The real difference between DDR320 and DDR400 performance is not that great, so we understand IBM's decision. However, we do wish the BIOS had at least an AUTO function that would see and recognize DDR400 for those Corporate clients who chose to use it. When we installed 2 X 512mb of DDR400 for our tests, the system still set it up as DDR320 — though it did recognize and set the aggressive 2-2-2-5 SPD memory timings.

While IBM shipped our Evaluation unit with just one DIMM, we would strongly recommend purchasing the S50 with 2 DIMMs or a quick upgrade to 2 DIMMs. Sandra 2004 confirms that with 2 DIMMs, the S50 operates in Dual-Channel memory mode, which is faster than the Single-Channel mode used by a single DIMM. Dual-Channel memory is one of the defining features of the Intel 865/875 series, and eliminating that feature has a significant impact in performance — making the 865 no faster than the venerable 845 chipset. IBM also limited on-board memory to 2GB in 2 DIMM slots. This will not likely be a significant limitation with a Corporate desktop system.

In our recent Biostar SFF review, we were impressed that you could assemble, upgrade, and change memory without having to remove the drive cage from the case. The IBM extends this ease of use/ease of upgrading to an even higher plateau. You can add, remove, repair, and troubleshoot virtually anything in the Think Center S50 without even so much as a screwdriver.

IBM Think Center S50: S50 Chassis IBM Think Center S50: BIOS
Comments Locked


View All Comments

  • mindless1 - Sunday, February 8, 2004 - link

    It's a shame the article uses proprietary SWF images, instead of the industry standard formats which everyone can use. Is the author getting kickbacks from Macromedia?
  • Budman - Wednesday, November 5, 2003 - link

  • Utterman - Friday, October 24, 2003 - link

    I have deployed around 1500 IBM thinkcentre S50's nationwide and they are really great systems to work with. Out of the 1500 systems that I worked with, I only had problems with 5 of them. This review is pretty dead on with everything about the S50. I find they are great systems to use for an office environment, but anything that needs a lot of performance prob. should look at something higher end.
  • Shalmanese - Thursday, October 23, 2003 - link

    It has always been my private opinion that Content creation is only related to typical buisness usage in that it has the same range of applications. However, saying that a 10% difference in content creation will translate into a 10% difference in real world buisness usage is like saying a 50% increase in memory bandwidth will lead to a correspondingly large increase in bandwidth intensive applications. The dillema is that any benchmarking utility that simulated TRUE desktop performance would be of no use as a benchmarking utility. Over the span of an 8 hour workday, the difference between a fast and slow computer may be 30 seconds worth of extra wait time if that. Also, the S50 is offered at every speed from a 2Ghz Celeron to a 3.2Ghz P4. Obviously, they would ship you the most expensive model to review but the vast majority sold are going to be in the mid range.
  • Anonymous User - Wednesday, October 22, 2003 - link

    The lack of CPU cooling fan concerns me. I've got a couple hundred SFF Dell OptiPlex machines throughout my office and I sleep better knowing the CPU has its own active cooling. Too many machines are shoved into areas that don't provide enough airflow for effective convection cooling, and we all know what that eventually leads to.

    And as for the 2-3 year lease deals, I think one of the good things to come out of the "dot bomb" era is that companies are demanding more from their equipment. Short-term lifespans may be great for the business models of technology companies but those of use in old-economy industries have a different idea of what a machine's expected lifespan should be. Mind you we're not using Commodore 64s for anything, but a four-year-old P3/500 runs Windows 2000 and MS Office just fine for your typical office worker. And that is where a business-oriented machine really shines- it's much easier to keep a fleet of old OptiPlexes or HP Vectras running smoothly than a hodge-podge of no-name machines.
  • sprockkets - Wednesday, October 22, 2003 - link

    The only thing I care about is how a stupid 3.2ghz 82 watt minimum processor can be cooled with such a dinky heatsink and quiet small fans. It like all other OEM cooled processors run at around 80c. They won't let you see the temperature for obvious reasons, since while a processor can run at 80c it will last much longer at cooler temps. And if you want stability you need to keep stuff cool.

    Also a 3db increase in sound is not twice as loud. A 10db increase is. But that doesn't take into perception of how annoying something can sound. For instance, a computer I have at home is just a little wider than a pci slot, so it has it's cd-rw drive vertically. The ps fan on it is on the outside and is only 60mm and 10mm thick. It gets very loud due to it getting rid of the heat in the system. In fact, it's loud whether I have a 800mhz duron or 1800+ Tbred. But then I took it to a reception hall and put it on stage I could barely tell it was on. So while it may sound quiet in a open building in a business, it will sound very loud at home. But that's just me and one observation.

  • Anonymous User - Wednesday, October 22, 2003 - link

    Interesting review. I just picked-up a stack of Small Forms for my company…the IBM small form was one I rejected, basically because it looks so bad….amongst other rejected systems including HP/Compaq, Dell(which is now absolutely prohibited from conducting business with my company – different story) and Micron.

    I ended up, at $600.00 per machine, with Gateway E4100s. Celeron 2.4s with 256 dual-channel DDR, Intel MoBo and basically the same chassis….only not as tacky looking as the IBMs. They’re also completely silent.
  • Anonymous User - Wednesday, October 22, 2003 - link

    I implement machines for small to mid-size companies in the Pacific Northwest. My recommendation and what I am hearing in the field is that there is very little need to renew leases from 2-3 years ago. User's themselves are seeing little to no benefit for getting the latest and greatest. People want their jobs, not more PC's brought in. There really aren't many apps that take advantage of the speed for most cases. People aren't rendering here or playing games, folks.

    Having said that we buy mostly small form factor PC's, and we buy mosltly HP. We used to buy Dell but saw their support go absolutely downhill in the last 2 years. Without Support why buy from these companies at all? Anyway, now we're just considering getting shuttles or vanilla brand. The only parts that really fail anymore are HDD's (and do they ever fail, the failure rate is about 10% easy across all manufacturer's of IDE, which is a lot)

    We can save a customer roughly $200-$300 by just getting no-name brand boxes like shuttle, etc, over IBM/HP. It's something we're seriously considering.
  • Anonymous User - Wednesday, October 22, 2003 - link

    Regarding the mysterious lower performance of the IBM S50, I think the clue must be the memory speed because 320MHz memory is bizarre when dual 400MHz is the design for this processor. This means one of two things...

    1) Asynchronous mode - if the S50 uses asynchronous memory timing, we all know that this reduces performance. We've seen many tests where 266 MHz synchronous is faster than 333MHz asynchronous. Also, to my knowledge, the P4 3.2 is made for dual channel 400MHz (800MHz effective) so running a 320MHz DIMM in single channel (320MHz) or dual channel (640MHz) mode WILL DEFINITELY hurt performance since the long pipelines in the P4 and the very high 3.2GHz speed are very dependent on avoiding any kind of wait on memory (a lower speed P4 such as 2GHz would be affected less). If true, this would be a double oversight.


    2) Synchronous mode - if the S50 uses dual channel memory in synchronous mode and they limit the speed of each bank to 320 MHz, then the fixed multiplier of the CPU must result in an actual CPU clock speed of 2.56 GHz rather than 3.20 GHz. If true, this is a simple case of underclocking.

    Either way this is a strange decision by IBM.

    --charlesz (waiting on my AnandTech password).
  • Wesley Fink - Wednesday, October 22, 2003 - link

    As stated in the review, stability and trouble-free operation are MUCH more important to IT Departments than performance will ever be. We did not test the IBM S50 as we would an Enthusiast machine since that is not appropriate. In fact, we ONLY ran Content Creation and General Usage benchmarks because these are made up of the kinds of applications Corporations normally use on their desktops. The IBM was at least 10 to 20% slower in those benchmarks than any other 865/865G we have tested. That is significant enough that we think it WILL interest some, if not all, IT departments.

    The IBM deserves the praise we gave on Engineering and low noise levels, but someone should be questioning the dismal performance we found in Corporate applications suites. If my IT department specified 3.2GHz P4s I would certainly expect to see performance in that neighborhood, and not performance more typical of a 2.6GHz CPU.

Log in

Don't have an account? Sign up now