Technologies
AMD Radeon RX 7900 XT and 7900 XTX Review: Faster, but Is It Enough?
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AMD’s latest top-end, next-gen gaming GPUs, which are based on its new RDNA 3 architecture, show marked improvement over the last generation. But the $899 Radeon RX 7900 XT and $999 Radeon RX 7900 XTX may only stand out at the moment because they’re cheaper than Nvidia’s latest top-end models, the GeForce RTX 4080 and 4090. And the XTX only occasionally hits the same level of performance in 4K as the RTX 4080 (or in some cases the RTX 3080 Ti).
That price gap looks a lot more enticing in reality than on paper, however, because Nvidia’s RTX 4080 isn’t selling at its nominal price of $1,200. Cards at that price aren’t in stock, with most of the available models running closer to $1,500 or more.
On the other hand, we won’t know what price AMD’s RX 7900 cards will settle on in reality until they’ve been out a while, making a price-to-performance comparison more difficult. If the gap sticks at $500, then dialing back your settings in order to get “good enough” 4K performance with the XTX in the games where it lags may be worth it. Both cards can handle 4K 1440p maxed out with ray tracing pretty well. But until we see the price and performance of whatever Nvidia turns its “unlaunched” lower-end model of the RTX 4080 into, it’s hard to determine the relative value of the 7900 XT for 4K or even 1440p.
Like
- DisplayPort 2.1 support
- USB-C connector
Don’t Like
- Big for its performance level
- Disappointing raytracing performance
- Some driver issues
At least the two AMD-branded models are more similar than they are different. They have different specs and therefore different levels of performance, with concomitant physical differences to support that. Third-party cards will likely have a lot more variations.
The XTX does have an extra temperature sensor for monitoring the air intake temperature of the case, which is intended to facilitate dynamic power allocation based on cooling. AMD hasn’t yet made the data collected by the sensor available for anyone to use, though.
Both cards are relatively big and heavy. In fact, the XTX is the first card I’ve tried to install where I’ve worried it might do some damage to the slot before I got it screwed in. It was fine once locked in, though.
Although they can work with eight-pin power connectors and fit into the same slot widths as before, the cards are higher than their predecessors, rising 5.3 inches (135 millimeters) above the motherboard (compared to 4.7 in. or 120 mm for the RX 6950 XT). So depending on your case size, they may be a snug fit. They do retain the USB-C port, which I like since desktops never have enough of them. But if you need a third full-size DisplayPort connector, you’ll have to join team Nvidia.
Like
- DisplayPort 2.1 support
- USB-C connector
Don’t Like
- Big for its performance level and very heavy
- Disappointing ray tracing performance
- Some driver issues
RDNA 3 and performance
Among other things, RDNA 3 adds support for DisplayPort 2.1, which has the necessarybandwidth to support 165Hz at 8K and 12 bits per color (up from 10 bits) for HDR, and to enable full gamut coverage of Rec.2020, or up to 480Hz in 4K. That’s a link bandwidth of up to 54Gbps, up from 20Gbps in DP 1.4a, which Nvidia’s cards still use. I can’t imagine trying to play in 8K with one of these, but more bandwidth for HDR is always welcome.
RDNA 3 architecture improves on RDNA 2 in several ways. It’s the first GPU built from chiplets, the modular building blocks of modern processor design. That allows AMD to use different process sizes on the same die, in this case, a 5nm graphics core and 6nm memory cache die. This can theoretically result in the ability to optimize the performance of the two separately, to squeeze in more power or speed where it does the most good, and ultimately fit a better processor in the same space and power envelope as earlier models.
It also enables AMD to add dedicated AI acceleration and improved raytracing accelerators — unfortunately, not enough to catch up to Nvidia’s RTX and Tensor cores — and to decouple the memory clock speeds from the compute unit speeds to help conserve power draw.
AMD says the GPU gets better DirectX raytracing performance, and it does. But AMD continues to seriously lag Nvidia in this respect. Neither card seems fast enough for 4K with maxed-out ray tracing like the RTX 4080, much less the RTX 4090. The XTX does match the RTX 4080 in 4K on some games without ray tracing, but for the most part, it varies across games and graphics applications.
When you stick one of these cards into a late-generation AMD-based motherboard, SmartAccess Video joins the company’s other “smart” technologies, which include Smart Access Memory. In this case, when you have a system equipped with a Ryzen 7000 CPU and RX 7000 GPU, it can distribute encoding and decoding tasks between the two for better performance. (My current testbed is Intel. I’m building out an additional AMD testbed, but it’s not yet ready for benchmarking duties.)
It’s possible that AMD’s next generation of its upscaling and performance optimization technology, FidelityFX Super Resolution 3, will bump either or both the GPUs over the performance line without losing much detail, but that won’t be available for a while. FSR 2.2 has barely arrived — it’s only available in two games thus far, Forza Horizon 5 and Need for Speed Unbound — and I haven’t been overly impressed with FSR 2.1 when I’ve tried it.
In Cyberpunk 2077, for example, unless I dropped the settings down to Balanced, I got no significant performance improvements. Even then it looked softer than I expect from 4K. Radeon Super Resolution, AMD’s in-driver equivalent that doesn’t require developer support, seemed to randomly fail to kick in, or at least fail to indicate it had, making it hard to judge.
Another still-to-come Adrenalin driver capability is Hyper-RX mode, a one-click optimizer for performance and latency that takes into account all the settings you’d normally have to hunt down and tweak individually. That capability is due in June, and it might make a notable difference, but I only occasionally saw a marked improvement using Rage mode, its current automatic overclocking feature.
I also encountered some type rendering issues in Microsoft Word and Outlook (although it’s probably the same bug for both), with characters disappearing and reappearing as I typed subsequent letters. Your mileage may vary, but it’s unbelievably annoying if you encounter it and use those applications a lot.
It’s hard to slot the AMD Radeon RX 7900 cards into any particular recommendation niche, at least until we’ve got more information on upcoming competitors, not only from Nvidia, but from AMD’s own line. So like a Magic 8 Ball I’m forced to settle on “Cannot predict now.”
Relative performance of recent GPUs
Technologies
Trump Maintains US‑Iran Negotiations Continue Amid Tehran’s Denials of Duplicity
President Trump insists that US‑Iran talks are ongoing despite Tehran’s denial of any negotiation plans, while warning that only a deal or total surrender will allow passage through the Strait of Hormuz. Conflicting statements from both sides have heightened uncertainty as the conflict enters its sixth month.
On Monday, President Donald Trump asserted that negotiations between the United States and Iran are still taking place, even after Tehran stated it has no intention of engaging in direct talks with Washington.
In a fiery Truth Social post, Trump labeled Iran’s leaders “unbelievably duplicitous,” claiming they are lying about ongoing peace talks “whether Iran wants to admit it or not.” He repeated his assertion that the United States completely controls the Strait of Hormuz, despite maritime traffic through the crucial route lingering at only a small fraction of pre‑conflict levels.
He wrote, “Nothing reaches Iran unless we allow it, and nothing will pass unless a deal—or total surrender—is achieved.”
Earlier that day, Iranian Foreign Ministry spokesperson Esmail Baghaei told reporters there is no imminent plan for U.S.–Iran negotiations, contradicting Trump’s earlier comment that talks would resume Monday afternoon. Baghaei added that Iran’s only current discussions are with Oman concerning the Strait of Hormuz.
The conflicting statements have heightened uncertainty over the peace‑talk process and the broader conflict, now in its sixth month.
Trump’s assertion about new negotiations came a day after he said on Truth Social that he had agreed to cancel a massive strike against Iran “subject to being able to rapidly make a DEAL.” He said in the same post that Iran and other Middle Eastern countries had asked him to hold off on that attack because “the perimeters of a deal has been agreed to.”
Trump has claimed dozens of times throughout the more‑than‑five‑month‑long war that a deal is at hand. No permanent deal has been signed, and a temporary ceasefire reached in June has fallen apart.
Trump has also repeatedly threatened to launch devastating strikes against Iran before backing off. After the latest example, oil prices on Monday fell and stocks surged.
BMI, a research unit of Fitch Solutions, said in a note Monday that a broader diplomatic understanding on reopening the Strait of Hormuz is still achievable this quarter, while raising the probability of its escalation scenario to 35% from 25%, citing mounting military, diplomatic and economic signs of rising U.S.-Iran tensions.
“Diplomatic progress is likely to be punctuated by periodic military flare-ups, while miscalculation by either side could trigger a renewed escalation,” BMI analysts wrote in a note. The firm said the key issue to watch is the future governance of the strait, as the Iran-Oman talks — potentially backed by Gulf states, China and the U.S. — point to efforts to build a post-conflict shipping framework.
Shipping risks persist even as diplomacy appears to be advancing. The United Kingdom Maritime Trade Operations Centre said it received a report of an incident 20 nautical miles (23 miles) northeast of Khasab, Oman — at the mouth of the strait — with a tanker’s master reporting an explosion in close proximity to the vessel at about 20:37 UTC Sunday (4:37 pm ET). The vessel and crew were safe and authorities are investigating, UKMTO said, advising ships to transit with caution.
The proposal Trump announced over the weekend calls for the U.S. and Iran to return to negotiations and continue ironing out some of the thorny issues that had derailed diplomatic efforts, according to The Associated Press, citing a regional official involved in the mediation efforts.
The official said the proposal also includes a reopening of the Hormuz Strait and halting attacks across the region, including by Iranian-backed militias in Iraq on the Arab Gulf countries and Jordan.
The U.S., for its part, will end its naval blockade on Iran and allow Tehran to export its oil, the official said, adding that no deal has been reached, although the mediation efforts remained underway.
Trump’s weekend reversal has lowered the temperature after days of escalating attacks across the Gulf. Kuwait said Saturday that Iranian forces launched a wave of drones within its airspace, with its military destroying multiple aircraft after Iran targeted critical infrastructure in the country’s north.
A parallel track with Muscat is also advancing. Iranian diplomats said Tehran was close to reaching a new arrangement with Oman to manage shipping through the Strait of Hormuz, a deal critical to preventing the war from escalating further, according to the Financial Times.
Iranian officials said negotiations over future management of the Hormuz Strait with Oman, which sits on the opposite shore of the waterway, are in their final stages. The agreed shipping route would be different from those used before, according to Iran’s Foreign Ministry spokesperson, Baghaei, adding that the new route was separate from the issue of the strait’s reopening or continued closure.
Technologies
Oil Prices Slide as Trump Halts Planned Iran Strike
Oil prices dropped after Trump cancelled a planned strike on Iran, with WTI down about 5% and Brent near 5% lower. He said the move followed requests from Tehran and regional allies for a pause while a deal shaping the Strait of Hormuz and Iran’s nuclear program is negotiated.
Oil prices fell on Monday after President Donald Trump announced he had cancelled a planned strike on Iran. WTI futures dropped roughly 5% to $80.34 a barrel, while Brent slipped about 4.7% to $83.77 a barrel.
Trump said early Sunday he called off the strike after Iran and several Middle Eastern nations asked him to hold off, noting that the outlines of a deal had been agreed upon. He added that the prospective accord would entail the immediate, full opening of the Strait of Hormuz and an end to Iran’s nuclear ambitions, according to his Truth Social post.
The president had been considering another round of strikes as diplomatic hopes waned since the conflict began on February 28. He said the U.S. and Iran would meet for talks on Monday, but Iran denied any scheduled negotiations with Washington, citing PressTV. Iran’s foreign‑ministry spokesperson Esmaeil Baghaei clarified that Tehran was only discussing shipping routes through the Strait of Hormuz with Oman. In a follow‑up Truth Social message, Trump insisted that, regardless of Iran’s acknowledgment, the United States is indeed discussing a solution to a long‑standing problem created by Iran.
Technologies
Oil Prices Drop as Trump Cancels Planned Attack on Iran
Oil prices fell sharply after President Trump announced the cancellation of a planned strike on Iran, citing a new deal that would open the Hormuz Strait and end Iran’s nuclear threat.
Oil prices fell sharply on Monday after President Donald Trump announced that he had called off a planned strike on Iran.
West Texas Intermediate futures, the U.S. benchmark, slipped roughly 5% to close at $80.34 per barrel, while Brent crude, the international benchmark, declined 4.7% to settle at $83.77 a barrel.
Trump made the announcement early Sunday, saying he had canceled the strike following requests from Tehran and other Middle Eastern countries.
In a Truth Social post, he wrote: “We have just been asked by Iran, and other Middle Eastern Countries, to hold off any attack in that the perimeters of a deal has been agreed to.”
The president indicated that the proposed agreement would include the immediate, complete, and total opening of the Hormuz Strait, as well as an end to Iran’s nuclear threat.
Trump had been weighing additional strikes amid diminishing prospects for a diplomatic resolution to the conflict that began on Feb. 28. He stated that the U.S. and Iran would hold negotiations on Monday.
Tehran denied that talks were planned with Washington, according to state news outlet PressTV.
Iran’s Foreign Ministry spokesman Esmaeil Baghaei said Tehran was only holding talks with Oman regarding the routes ships can use through the Strait of Hormuz.
In a subsequent Truth Social post, Trump added that whether “Iran wants to admit it or not, we are, in fact, talking of a solution to a problem that they have caused for decades.”
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