Skip to main content

AMD may be in hot water over CPU core exaggerations

amd confirms polaris as next gen gpu hdmi 2 0a support and big efficiency gains amdcarrizo
AMD
It looks like AMD is in trouble for not being totally honest about how many cores are in the Bulldozer CPU. A scorned buyer, Tony Dickey, has brought a class action against AMD contending that in fact there were effectively only four cores, while AMD claims there are eight. Unlike Intel’s cores with Hyper-Threading, AMD’s cores share a Floating Point Unit, which doesn’t allow the cores to actually execute commands from two threads at once.

The difference is a highly technical one, which is part of the reason for the class action suit. The difference between independent cores and cores with combined architecture has real effects on the performance and system capabilities.

The average computer buyer might not have any idea what the difference is between cores that share a floating point unit and cores that don’t, and this may lead them to believe they’re buying a true, eight-core CPU when they aren’t. It even shows up on the software end that way, with the Bulldozer CPU reporting a full eight cores in system diagnostics.

Get your weekly teardown of the tech behind PC gaming
Check your inbox!

Related: AMD Zen CPUs said to meet internal expectations with no bottlenecks

What’s the total sum of all of these accusations? Those filing the suit claim that AMD is guilty of violating the Consumer Legal Remedies Act, California’s Unfair Competition Law, and of committing false advertising, fraud, breach of express warrant, negligent misrepresentation, and unjust enrichment. Those are serious charges, although like most class action lawsuits, it’s possible that AMD will avoid any of them by settling out of court with those who purchased the processors.

AMD isn’t alone in facing scrutiny from informed consumers who dig deeper into the construction of its products. Nvidia was charged with a class action lawsuit in February of 2015 when users discovered that the GTX 970, which had a stated VRAM of 4GB, was actually a 3.5GB memory chip with a second chip containing the other 512MB. Users found that affected performance distinctly, and in that case, Nvidia offered partial refunds to users, or allowed them to return the card entirely.

It’s not clear yet what will happen with this case. Companies are accused of all sorts of legal issues constantly, but this one seems sufficiently supported to see the light of day in a more public forum, and specifically a courtroom. We’ll keep you updated as the situation evolves, and if you bought one of the Bulldozer CPUs, which includes the FX-8150, 8120, or 8100, then keep an eye out — you may have some cash headed your way soon.

Editors' Recommendations

Brad Bourque
Former Digital Trends Contributor
Brad Bourque is a native Portlander, devout nerd, and craft beer enthusiast. He studied creative writing at Willamette…
What is CPU usage, and how to fix high CPU usage
Over the shoulder view of a person using a Dell XPS 13 2-in-1 laptop.

PC freezing, going slow, or running into hitches where it shouldn't? Even if you have one of the best processors, high CPU usage could be to blame.

Unfortunately, if you aren't too computer savvy, what this means, what part of your computer causes the issue, and CPU failure symptoms are all sort of a mystery.

Read more
AMD’s new CPUs let you play Cyberpunk without a graphics card
AMD announcing AMD Ryzen 8000G.

AMD just revealed its new lineup of desktop APUs with built-in graphics at CES 2024: the Ryzen 8000G series. According to AMD, the Ryzen 8000G lineup can run AAA titles without requiring a discrete GPU. Will these CPUs really rival some of the best processors when it comes to graphics performance? Here's everything we know.

Equipped with AMD's Radeon 700M graphics, these chips combine a CPU and a GPU, and AMD claims that the integrated graphics can compete against some of the most popular discrete graphics cards.

Read more
Someone tweaked AMD’s RX 7800 XT, and the results may surprise you
YouTube channel Techtesters reviewing an underclocked AMD RX 7800 XT graphics card.

AMD’s RX 7800 XT graphics card handily beats Nvidia’s RTX 4070, outperforming it in games and costing less to boot, with the GPU comparison falling firmly in AMD’s favor. The main drawback? Its power consumption is much higher. But it doesn’t have to be that way, as one YouTube channel has shown that undervolting the card could have a notable impact.

When set up right out of the box, AMD’s card has a power draw of 263 watts, while Nvidia’s offering sips just 200 watts. If you’re concerned about your graphics card getting hot and heavy in operation -- and spiking your electricity bill -- the RTX 4070 is probably the better choice.

Read more