Intel Core i5-2405S Review
Introduction and Technical Specifications
Published: 31st August 2011 | Source: Intel | Price: |
Introduction
The latest in the LGA1155 line of CPUs is the i5-2405S. Whilst many processors get bigger and better with more speed, ever tinier nm processes etc, this is squarely aimed at the energy efficient, low-power end of the market.
With a TDP of only 65W and a clock speed of 2.5GHz this is either a serious attempt to lower the energy consumption of businesses or, like the famed 65W E6800, a potential powerhouse.
Let's find out which one it is shall we.
Technical Specifications
A quick glance through the specification table and we see that this is pretty much a standard Core i5 processor. We have four non-HT cores, a bit of Turbo performance boost, all very standard fare.
The big change with the i5-2405S compared to, for example, the Core i5-2500K we use in our Sandy Bridge bench rig is the much tighter multiplier restrictions that limit overclocking potential and the obvious reduction from a TDP of 95W to 65W.
| Status | Launched |
| Launch Date | Q2'11 |
| Processor Number | i5-2405S |
| # of Cores | 4 |
| # of Threads | 4 |
| Clock Speed | 2.5 GHz |
| Max Turbo Frequency | 3.3 GHz |
| Bus/Core Ratio | 25 |
| DMI | 5 GT/s |
| Instruction Set | 64-bit |
| Instruction Set Extensions | SSE4.1/4.2, AVX |
| Embedded Options Available | No |
| Lithography | 32 nm |
| Max TDP | 65 W |
| Recommended Channel Price | $205.00 |
| # of Memory Channels | 2 |
| Max Memory Bandwidth | 21 GB/s |
| ECC Memory Supported | No |
| Processor Graphics | Intel® HD Graphics 3000 |
| Graphics Base Frequency | 850 MHz |
| Graphics Max Dynamic Frequency | 1.1 GHz |
| Intel® Quick Sync Video | Yes |
| Intel® InTru™ 3D Technology, | Yes |
| Intel® Insider™ | Yes |
| Intel® Wireless Display | No |
| Intel® Flexible Display Interface (Intel® FDI) | Yes |
| Intel® Clear Video HD Technology | Yes |
| Dual Display Capable | Yes |
| Max CPU Configuration | 1 |
| TCASE | 69.1°C |
| Package Size | 37.5mm x 37.5mm |
| Sockets Supported | FCLGA1155, LGA1155 |
| Low Halogen Options Available | Yes |
| Intel® Turbo Boost Technology | 2.0 |
| Intel® vPro Technology | No |
| Intel® Hyper-Threading Technology | No |
| Intel® Virtualization Technology (VT-x) | Yes |
| Intel® Virtualization Technology for Directed I/O (VT-d) | No |
| Intel® Trusted Execution Technology | No |
| AES New Instructions | Yes |
| Intel® 64 | Yes |
| Idle States | Yes |
| Enhanced Intel SpeedStep® Technology | Yes |
| Thermal Monitoring Technologies | Yes |
| Intel® Fast Memory Access | Yes |
| Intel® Flex Memory Access | Yes |
| Execute Disable Bit | Yes |
Most Recent Comments
Seems pretty pointless to release this when it offers nothing but a lower TDP and who would buy this when you can get the 2500k for the same money which you can also overclock 
Even if you don't go for the 2500k the non K 2500 is still cheaper and faster than the 2405S.Quote
Even if you don't go for the 2500k the non K 2500 is still cheaper and faster than the 2405S.Quote
There's also the i5 2500T as well which is only 45W, but that's even more expensive than the 2500K.Quote
ok amd here is you chance.....hell i'll even write the slogan for you......."AMD's 980 BE--FASTER THAN THE LATEST I5!!!!!!!!!"Quote
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Originally Posted by SieB
Seems pretty pointless to release this when it offers nothing but a lower TDP and who would buy this when you can get the 2500k for the same money which you can also overclock Even if you don't go for the 2500k the non K 2500 is still cheaper and faster than the 2405S. |
Would it not make a better HTPC solution?
But then the 2500K isn't a hot chip, and you get a fair bit more for the money. What would be interesting is if you can passively cool these things and get something truly silent.Quote
But then the 2500K isn't a hot chip, and you get a fair bit more for the money. What would be interesting is if you can passively cool these things and get something truly silent.Quote
I think low end AMD is more suitable for HTPCs. I got an mATX board that would do the same thing as an i3-2100 or i5-2405S rig can do. The Athlons are like $40 right now. It would be interesting to see if it's possible to passively cool the i5-2405S. That would be an advantage that the 2400S has. 45W to 65W CPUs can probably be cooled w/o a fan. My cousin's Dell Dimension 1100 was (Celeron D @ 2.53GHz).Quote
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Originally Posted by shyguy094
I think low end AMD is more suitable for HTPCs. I got an mATX board that would do the same thing as an i3-2100 or i5-2405S rig can do. The Athlons are like $40 right now. It would be interesting to see if it's possible to passively cool the i5-2405S. That would be an advantage that the 2400S has. 45W to 65W CPUs can probably be cooled w/o a fan. My cousin's Dell Dimension 1100 was (Celeron D @ 2.53GHz). |
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Originally Posted by Speed
The onboard GPU though is very efficent, so that is another advantage unless you are talking about AMD APUs. I'm running a small form factor system on a 2100 @ 2560x1600 with no issues. I've also just built a HTPC for someone around the same CPU, they are ideally suited for HTPC applications. Maybe not as cheap as the AMD solutions, but they generally perform better in my experience. Obviously if you don't need the extra HP, then the AMD solution is fine. |
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