AMD Radeon R9 Fury X Memory Overclocked By 20% – Can HBM Really Be Overclocked ?

Jul 2, 2015
Submit have apparently managed to overclock their AMD Radeon R9 Fury X graphics card sample by 20%, from 500mhz to 600mhz. This naturally raised some eyebrows here at and at as well. The reviewer achieved this overclock by adjusting the memory frequency through a slider in AMD’s Catalyst Control Center drivers.

AMD Radeon R9 Fury X
However AMD stated in the R9 Fury X reviewer’s guide that there was no such slider for the R9 Fury X to enable memory overclocking via the drivers.  According to Koen Crijns from however, a memory overclocking slider did appear randomly “after every other few reboots”.

AMD Radeon R9 Fury X HBM Appears Overclocked By 20%

Thus Crijns proceeded to overclock both the core and the memory and to his surprise , and ours, he successfully managed to overclock the memory by 20% as shown inside the GPU-Z window in the screenshot below. The core clock was also pushed to 1145Mhz and both the core and memory overclocks were reportedly stable.

With half a terabyte/s of memory bandwidth as well as AMD’s new GCN 1.2 compression engine introduced with Tonga, which significantly improves bandwidth utilization. We’re looking at unprecedented levels of usable memory bandwidth. So users would be hard pressed to find any reason, performance-wise, to overclock the memory. Still, it would be quite interesting to see how far HBM can be pushed and the performance improvement that would be attainable from doing so, just as a healthy exercise of curiosity.

Interestingly enough we’ve also heard that R9 Fury X over-volting might be coming sooner rather than later. In fact we’ve found out that some users have already managed to unlock voltage control on their R9 Fury X cards. And we’ll be covering it in detail very soon in a forthcoming article.

We’re looking forward to seeing what AMD’s add-in-board partners will be able to pull off with their own custom designed PCBs and cooling solutions. AMD doesn’t impose any restrictions on its AIB’s when it comes to overclocking and over-volting. So partners like MSI with their triple-overvoltage feature can really make a case for their over-engineered power delivery circuitry and use of top notch components. Especially in their top of the line Lightning and Hawk series of enthusiast graphics cards.

Custom air cooled Fiji powered cards are launching on the 14th of July in the form of the AMD Radeon R9 Fury ( non-x ). We’ll make sure to bring you in-depth coverage of these cards as we get closer to launch, so stay tuned.

WCCFTech AMD Radeon R9 Fury X2 AMD Radeon R9 Fury X AMD Radeon R9 Nano AMD Radeon R9 Fury AMD Radeon R9 290X
GPU Fiji XT x 2 Fiji XT Fiji XT Fiji Pro Hawaii XT
Stream Processors 8192 4096 4096 3584 2816
GCN Compute Units 128 64 64 56 44
Render Output Units 128 64 64 64 64
Texture Mapping Units 512 256 256 224 176
GPU Frequency TBA Up to 1050Mhz Up to 1000 MHz Up to 1000 MHz 1000Mhz
Memory 8GB HBM (4 GB Per Chip) 4GB HBM 4GB HBM 4GB HBM 4GB GDDR5
Memory Interface 4096-bit x 2 4096bit 4096bit 4096bit 512bit
Memory Frequency 500Mhz 500Mhz 500 MHz 500Mhz 1250Mhz
Effective Memory Speed 1Gbps 1Gbps 1Gbps 1Gbps 5Gbps
Memory Bandwidth 1024 GB/s 512GB/s 512GB/s 512GB/s 320GB/s
Cooling Liquid Liquid, 120mm Radiator Air, Single Fan. Custom AIB Solutions Later Air, Custom AIB Solutions Air, Single Blower Fan
Performance (SPFP) 17.2 TFLOPS 8.6 TFLOPS 8.19 TFLOPS 7.2 TFLOPS 5.6 TFLOPS
TDP TBA 275W 175W 275W 250W
Power Connectors Dual 8-Pin Dual 8-Pin 8-Pin Dual 8-Pin 6+8 Pin
GFLOPS/Watt TBA 31.3 47.1 26.2 19.3
New Prices TBA $649 $499 $549 $299 (Retail)
Launch Date Early 2016 24th June 2015 7th September 2015 10th July 2015 24th October 2013