The Cooler Master Silencio 450 is essentially a cut-down version of the successful Silencio 550, targeted at those seeking quiet operation on a shoestring budget.
January 30, 2012 by Lawrence Lee
Product | Cooler Master Silencio 450 ATX Tower Case |
Manufacturer | |
Street Price | US$70 |
Last year, Cooler Master surprised us with the Silencio 550, one of the rare sub-US$100 tower cases that actually lived up to its quiet billing. It had a pleasant appearance, quiet fans, acoustic dampening foam, a removable hard drive cage, and other extras like a SATA hard drive docking bay, USB 3.0, and an SD memory card reader thrown in. Like most noise-conscious cases, it was airflow-starved, resulting in a rather toasty environment for higher-end systems, but only a select few models like the Antec Solo II are built and designed well enough to overcome such obstacles. The Silencio 450 is a follow-up to the 550, but not an update; actually it is a less costly model for those seeking quiet operation on a shoestring budget.
|
Like the 550, the Silencio 450 boasts sound damping foam, quiet fans, USB 3.0, and an SD card reader, but also adds a unique feature: the ability to flip the location of the door hinge. Doors typically flip open right to left, making it a pain for users who keep their cases on their right; the 450 gives you to the option to have it swing out from either side.
|
The 450 is also a less attractive case, ditching the glossy full-length door for a half height door with a matte finish and front ports exposed at the center, pushed in compared to the surrounding surface. It appears that airflow hasn’t improved, as the vents along the sides of the front bezel still run only halfway up. It’s a smaller chassis as well, with a waistline 0.7 inches slimmer than the 550, and at 13.7 lb is almost 7 lb lighter than its predecessor. This immense savings in construction material indicates a much weaker build quality.
|
Specifications: Cooler Master Silencio 450 (from the product web page) | |
Available Color | Full Black |
Material | Steel body, plastic front bezel |
Dimension (W / H / D) | 194 x 451.45 x 494.75 mm (7.63 x 17.77 x 19.47 inch) |
Weight | 6.2kg / 13.66 lb |
M/B Type | Micro-ATX, ATX |
5.25″ Drive Bay | 3 exposed |
3.5″ Drive Bay | 1 exposed, 5 hidden |
I/O Panel | USB 3.0 x 1, USB 2.0 x 1, Mic x1, Audio x 1, SD card reader x 1 |
Expansion Slots | 7 |
Cooling System | Front: 120mm fan x 1, 800 RPM (can support 140mm fan x 1) Rear: 120mm fan x 1, 800 RPM |
Power Supply Standard | ATX PS2 (optional) |
2.5″/3.5″- SATA HDD Drive Bay | 1 hidden |
Maximum Compatibility | CPU cooler height: 6.16″ / 156.5mm VGA card length: 11.06″ / 281mm 16.61″ / 422mm (Without HDD cage) |
EXTERIOR
The Cooler Master Silencio 450 is constructed primarily of steel with a plastic front bezel. It measures 19.4 x 45.1 x 49.5 cm or 7.6 x 17.8 x 19.5 inches (W x H x D) for a total case volume of 43.3 and weighs in at 6.2 kg or 13.7 lb.
|
|
|
|
|
INTERIOR
Like the side panels, the interior of the 450 is noticeably weaker compared to its predecessor. The hard drive cages are the only portions of the chassis that feel really solid. This is not a surprise given that the 550 is about 7 lb heavier. We also found the side panels too clangy due to their thinness and lack of structural support.
|
|
|
|
|
|
REVERSIBLE DOOR
Despite being a budget case the Cooler Master Silencio has one convenient feature that we’ve never seen on a tower case before: the ability to flip the front door. The hinge can be taken apart and modified to swing out from the side of your preference.
|
|
|
|
|
|
ASSEMBLY
Assembling a system in the Silencio 450 is a straight forward affair. Our test system consists of an Asus 790GX motherboard, a ZEROtherm FZ120 heatsink with a Nexus 120 mm fan, a WD Caviar hard drive and a Cooler Master 700W modular power supply. By our measurements, video card clearance is limited to approximately 27.1 cm and CPU heatsinks to 15.9 cm.
|
|
|
|
|
|
|
TESTING
System Configuration:
- AMD Phenom II X4 955 Black Edition
processor – 3.2 GHz, 45nm, 125W - ZEROtherm Zen FZ120
CPU cooler with Nexus 120mm fan - Asus M4A78T-E motherboard
– 790GX chipset - Crucial memory – 2x2GB, DDR3-1333
- ATI Radeon HD 4870 1GB
graphics card - Western Digital Caviar Black
hard drive – 1TB, 7200 RPM, 32MB cache - Coolermaster
Silent Pro M700W – modular ATX power supply - Microsoft
Windows 7 operating system – Ultimate, 64-bit - ATI
Catalyst 11.1 graphics driver
Measurement and Analysis Tools
- CPUBurn
processor stress software. - FurMark
stability test to stress the integrated GPU. - GPU-Z to
monitor GPU temperatures and fan speed. - SpeedFan
to monitor system temperatures. - Seasonic
Power Angel AC power meter, used to measure the power consumption
of the system. - Custom-built, four-channel variable DC power supply, used to regulate
fan speeds during the test. - PC-based spectrum analyzer:
SpectraPlus with ACO Pacific mic and M-Audio digitalaudio interfaces. - Anechoic chamber
with ambient level of 11 dBA or lower - Various other tools for testing fans, as documented in our
standard fan testing methodology.
System temperatures and noise levels were recorded with SpeedFan and GPU-Z
at idle and on load using CPUBurn (K7 setting) and FurMark, an OpenGL
benchmarking and stability testing utility.
Baseline Noise
Stock Fan Noise Level | |||
Fan | SPL @1m (dBA) | ||
7V | 9V | 12V | |
Rear | 14 | 17~18 | 23 |
Front | 15 | 18 | 22 |
Combined | 16~17 | 21 | 25~26 |
Measuring mic positioned 1m at diagonal angle left/front of case. |
The stock fans have similar acoustics to those found on the Silencio 550, though they appear to be higher speed models that produce more turbulent noise. The bearings generate a constant, low frequency clicking noise that is audible, but only at close proximity. Otherwise the fans sounded fairly good with a mostly smooth character both at low and high speed. The overall noise level produced by fans was low as well, with the two combining to measure 16~17 dBA@1m at 7V and 25~26 dBA@1m at full speed
|
Test Results: Radeon HD 3300 IGP
System Measurements | |||
System State | Idle | CPU + GPU Load | |
System Fan | 7V | ||
CPU Fan | 9V | 12V | |
CPU Temp | 28°C | 52°C | 50°C |
SB Temp | 34°C | 40°C | 39°C |
HD Temp | 31°C | 31°C | 31°C |
System Power (AC) | 47W | 154W | 153W |
SPL@1m | 19 dBA | 19 dBA | 20 dBA |
Ambient temperature: 22°C. |
Our IGP test system was very quiet at idle, measuring 19 dBA@1m with the CPU fan at 9V and the system fans at 7V. On load, the CPU and Southbridge temperatures rose by 24°C and 6°C respectively while the hard drive remained at a cool 31°C; There was no difference in noise level (the power supply fan might have ramped up but was drowned out by the rest of the system). Speeding up the CPU fan to 12V lowered the CPU temperature by 2°C and increased the noise level to 20 dBA@1m which is the around the upper limit with which we try to restrict cases to using our IGP configuration.
|
Though our SPL measurements were low, we could detect a steady, slightly annoying, low pitched, electrical-sounding hum emitted by the system, likely a result of a hard drive vibration being passed onto the rest of the case. Even though we took steps to prevent this by adding styrofoam padding, it was still evident. The sound actually showed up in the spectrum analysis as a tonal peak at ~120 Hz which corresponds to the 7200 RPM speed of the hard drive.
IGP Configuration Comparison (Load) | ||||
Case | NZXT H2 | Antec Solo II | CM Silencio 550 | CM Silencio 450 |
System Fans | rear, fronts @low | rear @low | rear, front @12V | rear, front @7V |
CPU Temp | 51°C | 47°C | 51°C | 50°C |
SB Temp | 38°C | 38°C | 41°C | 39°C |
HD Temp | 37°C | 35°C | 31°C | 31°C |
SPL@1m | 19 dBA | 19~20 dBA | 19~20 dBA | 20 dBA |
CPU fan set to 12V. Ambient temperature: 22°C. |
As our IGP test system is not particularly taxing, the Silencio 450 turned in results similar to other “quiet” cases we’ve tested in the past, performing very similarly to Silencio 550 which shares much of the same DNA.
Test Results: Radeon HD 4870
System Measurements (HD 4870) | ||||
System State | Idle | CPU + GPU Load | ||
System Fan | 7V | 9V | 12V | |
CPU Temp | 34°C | 55°C | 54°C | 51°C |
SB Temp | 49°C | 59°C | 58°C | 58°C |
HD Temp | 31°C | 31°C | 31°C | 30°C |
GPU Temp | 77°C | 87°C | 86°C | 86°C |
GPU Fan | 900 RPM | 2050 RPM | 2030 RPM | 1980 RPM |
SPL@1m | 21 dBA | 27 dBA | 27 dBA | 29 dBA |
CPU fan set to 100% speed. Ambient temperature: 22°C. |
Adding an HD 4870 created a more challenging configuration for the Silencio 450. Relatively cool and quiet when idle, full load brought the CPU and Southbridge temperatures into the mid to high 50’s and the GPU fan spun up to 2050 RPM, keeping the GPU core at 87°C. Increasing the system fan’s speed to 9V had a minor effect on the components, improving the CPU, Southbridge and GPU temperatures by a hair, and allowing the HD 4870 fan to slow down slightly. The overall noise level was 27 dBA@1m whether the system fans were set to 7V or 9V. Running the fans at full speed generated further gains, but the extra noise going from 27 dBA to 29 dBA wasn’t worth it.
|
The HD 4870 stock cooler produces a noticeable but soft hissing noise that would be considered inoffensive by many, so while the system was 6 dB louder than the integrated graphics configuration, the noise level wasn’t too unpleasant.
HD 4870 Configuration Comparison (Load) | ||||
Case | CM Silencio 450 | Antec Solo II | CM Silencio 550 | NZXT H2 |
System Fans | rear, front @9V | rear, front @12V* | rear, front @12V | rear, fronts @med |
CPU Temp | 54°C | 45°C | 57°C | 53°C |
SB Temp | 58°C | 47°C | 56°C | 52°C |
HD Temp | 31°C | 34°C | 31°C | 33°C |
GPU Temp | 86°C | 82°C | 88°C | 87°C |
GPU Fan Speed | 2030 RPM | 1880 RPM | 2330 RPM | 2110 RPM |
SPL@1m | 27 dBA | 27~28 dBA | 27~28 dBA | 28 dBA |
CPU fan set to 100% speed All temperature results adjusted to 22°C ambient. *Nexus 120 mm fan added as bottom intake. |
Housing our HD 4870 configuration, the Silencio 450 cooled slightly better than the Silencio 550, probably due to its higher speed fans. Against a more formidable foe in the Solo II, the Silencio 450 manages to be a tad quieter, but with much higher temperatures.
AUDIO RECORDINGS
These recordings were made with a high resolution, lab quality, digital recording
system inside SPCR’s own 11 dBA ambient anechoic chamber, then converted to
LAME 128kbps encoded MP3s. We’ve listened long and hard to ensure there is no
audible degradation from the original WAV files to these MP3s. They represent
a quick snapshot of what we heard during the review.
Each recording starts with ambient noise, then 10 second segments of product
at various states. For the most realistic results,
set the volume so that the starting ambient level is just barely audible, then
don’t change the volume setting again while comparing all the sound files.
- Cooler Master Silencio 450 – Baseline – rear and front fans at 1m
— 7V (16~17 dBA@1m)
— 9V (21 dBA@1m)
— 12V (25~26 dBA@1m)
- Cooler Master Silencio 450 – Radeon HD 3300 IGP test system at 1m
— idle/load, rear and front fans at 7V, CPU fan at 9V (19 dBA@1m)
— load, rear and front fans at 7V, CPU fan at 12V (20 dBA@1m)
- Cooler Master Silencio 450 – Radeon HD 4870 test system at 1m
— idle, rear and front fans at 7V, CPU fan at 12V (21 dBA@1m)
— load, rear and front fans at 9V, CPU fan at 12V (27 dBA@1m)
— load, rear and front fans at 12V, CPU fan at 12V (29 dBA@1m)
FINAL THOUGHTS
In our first test configuration, we setup the Silencio 450 with a relatively low power IGP based system and it performed on par with the Silencio 550 — not surprising seeing as they share the same basic layout. Adding a moderately powerful graphics card heated up things considerably in both cases, but ultimately the 550 got the worst of it due to its underpowered fans. However neither case performed particularly well, being easily beaten by the much-lauded Antec Solo II. Both Silencios showcase the number one problem with “quiet” cases: they tend to block out noise by sealing up every hole possible resulting in poor airflow and high temperatures. If the front bezel is going to be the main source of intake airflow, the vents should be as wide as possible and run all the way up the sides.
The thermal and acoustic performance of the 450 could be overlooked given the cost of the case, but there are a laundry list of other issues as well. The thinner construction makes the side panels prone to vibration. The bottom hard drive cage is an inconvenience, requiring the intake fan to be removed first to properly secure the drives. The top hard drive cage is removable allowing for a long graphics card, but only if it’s installed in the 4th or 5th slot, an option not available on most budget motherboards. Modern cable management features are present, but their usefulness is dubious due to the laughable amount of space behind the motherboard tray. They’ve cut corners in other places as well, with the motherboard mounting holes not being pre-threaded, the lack of proper expansion slot covers, and power supply air filter being a crudely secured piece of plain steel mesh.
These cutbacks were intended to make the case more affordable but with a street price of US$70, the Silencio 450 is currently only US$10~$15 cheaper than the Silencio 550. The only real advantage the 450 has over the 550 is its reversible door, hardly enough to compensate for all its shortcomings. The 550 doesn’t suffer from any of the 450’s structural problems and boasts a second intake fan option, individually removable hard drives, and a SATA hotswap bay as well, making it a much better deal overall. As it stands the Silencio 550 remains our favorite budget case — the cuts made to create the 450 were simply too deep.
Our thanks to Cooler Master for the Silencio 450 case sample.
* * *
Articles of Related Interest
Cooler Master Cosmos II: Ultra Tower Case
Raidmax Viper: A Modern Budget Tower
Fractal Design Define Mini MicroATX Tower
Antec P280: Performance One Refresh
Antec Solo II: The Legacy Lives On
Cooler Master Silencio 550 Quiet ATX Tower
* * *