System barely stable after upgrade! Will this PSU suffice for my system?

Infryndiira

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Nov 23, 2014
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Greetings!

I recently upgraded my system with a new case featuring a lot more fans (moving from 3x 120 mm plus the stock cooler's to 8x mixed plus two for the new cooler) and a graphics card (moving from the Sapphire R7 260X OC 1GB to the Sapphire RX 480 Nitro+ 4 GB). However, as I tried to benchmark the system with Heaven, the computer reset itself during GPU-stressful moments. It has also done so on two similar occasions during actual video game gameplay.

My old PSU is a Corsair VS650, which has served me well with the old system. I suspect it is now stretched to its limits though: the system boots and works normally, but without undervolting the RX 480 I face the shutdowns mentioned above. Naturally, I assume it's a PSU issue, and will upgrade to a new PSU when I get paid the coming days.

So, yeah... assuming it's a PSU issue... My question is: will the CoolerMaster G750M suffice? Currently I use every cable of the VS650, and based on my estimates, this will also be pretty much the case with the G750M.

My detailed system specs are below. The CPU is at stock speeds with TurboCore disabled, and the RX 480 is currently undervolted to a max of 1000mV and 1240Hz for the core (from 1150mV and 1306Hz) and 975mV for the VRAM (from 1000mV), which keeps the system presently stable.

EDIT: I am also using the latest AMD drivers.

Case Zalman Z11 NEO
Case Fans 2x 80 mm Zalman, 1x 120 mm Zalman, 2x 120 mm Zalman Blue LED, 1x 140 mm Bitfenix SPECTRE Blue LED, 2x 140 mm Bitfenix SPECTRE Blue LED PWM
Motherboard MSI 760GA-P43 (FX)
CPU AMD FX-8320 Eight-Core Processor @ 3.50 GHz
CPU Cooler Arctic Freezer A32 with Arctic MX-4 thermal paste and extra 120 mm Arctic F12 PWM fan
RAM 2x 8 GB Mushkin DDR3 @ 1333 MHz
GPU Sapphire Radeon RX 480 Nitro+ 4 GB
SSD 1x Transcend SSD370S 128 GB SATA III
HDD 1x Western Digital 250 GB SATA II Caviar, 1x Western Digital 2 TB SATA III Green
ODD Samsung DVD-RW SH-224DB/BEBE Black
PSU Corsair VS Series 650W 80+ White Rating
OS Windows 10 Pro 64-bit
Partitions DVD RW Drive (A); 119 GB SSD (C); 232 GB HDD (D); 999 GB HDD (E); 863 GB HDD (F)
Display 1x 23" Samsung SyncMaster B2330HD (HDMI), 1x 32" Samsung LE32B530 (HDMI, cloned)
Speakers Logitech X-540 5.1 Surround
Mouse Turbo-X GM-200 Gaming Mouse, Logitech MK-220 Wireless Combo Mouse
Keyboard Microsoft Internet Keyboard, Logitech MK-220 Wireless Combo Keyboard
USB Devices Konig CMP-SOUND USB, Logitech HD Webcam C270 WER, Epson Stylus SX115
 

Infryndiira

Reputable
Nov 23, 2014
8
0
4,510


I am hoping to spend 100-140 euros on it tops as I am currently on limited employment. I am limited to what vendors I can choose, as I live in Greece (and importing hardware via online transaction is impossible atm) so it has to be one of the local stores or chains. As an example, the CoolerMaster G750M goes for about 100 euros, and the CoolerMaster V750 goes for about 140 euros here. In addition, I'd like the unit to be about the same size as the aforementioned (VS650, G750M, V750) so I the bottom 140 mm fan fits in the Z11 case I am using.
 

Infryndiira

Reputable
Nov 23, 2014
8
0
4,510
It doesn't seem to be, I can only find the 550W version after a quick look. In addition the G2 units appear to be a bit too long, and I worry they might obstruct the bottom intake fan.