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


uk.hardware.info 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 Wccftech.com and at uk.hardware.info 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 uk.hardware.info 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.

WCCFTechAMD Radeon R9 Fury X2AMD Radeon R9 Fury XAMD Radeon R9 NanoAMD Radeon R9 FuryAMD Radeon R9 290X
GPU Fiji XT x 2 Fiji XT Fiji XT Fiji ProHawaii XT
Stream Processors8192 4096 409635842816
GCN Compute Units128 64 64 5644
Render Output Units12864646464
Texture Mapping Units512256256224176
GPU FrequencyTBAUp to 1050MhzUp to 1000 MHzUp to 1000 MHz1000Mhz
Memory8GB HBM (4 GB Per Chip) 4GB HBM 4GB HBM 4GB HBM4GB GDDR5
Memory Interface 4096-bit x 2 4096bit 4096bit 4096bit512bit
Memory Frequency500Mhz500Mhz500 MHz500Mhz1250Mhz
Effective Memory Speed 1Gbps 1Gbps1Gbps 1Gbps5Gbps
Memory Bandwidth1024 GB/s512GB/s512GB/s512GB/s320GB/s
CoolingLiquidLiquid, 120mm RadiatorAir, Single Fan. Custom AIB Solutions LaterAir, Custom AIB SolutionsAir, Single Blower Fan
Performance (SPFP)17.2 TFLOPS8.6 TFLOPS8.19 TFLOPS 7.2 TFLOPS 5.6 TFLOPS
Power ConnectorsDual 8-PinDual 8-Pin8-PinDual 8-Pin6+8 Pin
New PricesTBA$649$499$549$299 (Retail)
Launch DateEarly 201624th June 20157th September 201510th July 201524th October 2013