Low framerate with dual Xeon x5450 and 32gb of ram

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speedx

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Jan 8, 2015
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Hi, for shits and giggles I thought I would pair a dual Xeon x5450 setup with 32 GB of ram and an XFX AMD Radeon r9 270x. The problem is that I am getting stuttering and a low score using CINNEBENCH, with both CPUs I have 8 cores at 3GHZ and 32 GB of DDR2 667 FBDIMM ram.
When I used an AMD FX8320 which has the same amount of cores and less ram I get a better score in the GPU test.

Thanks ahead of time.
 
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The Xeons are much older tech, and comparing just GHz is insufficient, especially between generations of hardware. Those Xeons are basically fancy Core 2 Quad QX9650's.
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jimmysmitty

jimmysmitty

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Oct 5, 2007
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As said, it is a much older uArch. Those are Harpertown Xeons, based on the 45nm Penryn uArch. Great CPUs for their time however they are old enough to where the performance difference is pretty big. A AMD FX8320 is about equal to a Core i5 2500K which was much faster than a single quad core 45nm CPU.

Now put together a newer dual Xeon system and it would probably eat the AMD FX alive.
 
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MarkW

MarkW

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Dec 7, 2009
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Am I surprised that a pair of 8 year old Xeons with a total of 8 cores would be slower than an 2 year old AMD 8 core cpu in gaming? No.

Xeons are workhorses. But not especially great at gaming. Some of the newest ones do ok at it, but again, you have 8 year old Xeons. They are handicapped to some extent by the 1333 Front Side Bus (remember those?), and I doubt that being dual 4 core CPU's helps you either.

5 years in the computer industry is an eternity. Those 5450s were powerful business CPU's 8 years ago. But thats been an eternity and a half ago now.
 
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rhysiam

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Mar 24, 2013
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The issue when gaming, and likely the same in the GPU Cinnebench test, is that it's not able to effectively use all 8 CPU cores. The benchmark (and most games) rely on only 2 to 4 cores, and want them to be as fast as possible. That's why you'll see a 4 core 4790K @ 4.4Ghz beat a 8 core 5960X @ 4Ghz in almost every single gaming benchmark (when the bottleneck is shifted to the CPU).

You have 8 cores, but they're not very fast. I imagine you're CPU bottlenecked even though CPU usage sits around 50%, as you say, simply because the benchmark is only able to use a few of your cores which are being pushed to their limit, while the rest sit more or less idle.
 
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