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schede grafiche che hanno scritto la storia

Le schede grafiche che hanno scritto la storia

In questo articolo apriamo il cassetto della memoria per ricordarci alcune delle schede video che hanno scritto la storia, segnando la loro epoca. Non citeremo tutte le schede video uscite negli ultimi 20 anni, ma faremo una scrematura per concentrarci su quelle che, a nostro giudizio, sono quelle da ricordare con piacere. Se pensate che non ne abbiamo citata qualcuna, fatecelo sapere nei commenti: non è una bocciatura, ma semplicemente abbiamo dovuto fare delle scelte.

Dalle Voodoo alle prime GeForce, per passare alle proposte di ATi Technologies, da un decennio nelle mani di AMD. Inizieremo dal 1996 e dalla singola pixel pipeline, seguendo l’evoluzione fino ai tempi moderni, dove una scheda grafica è qualcosa di ben più complesso e potente rispetto agli albori. Ciò che non cambia è la passione di milioni di persone verso questo mondo fatto di tecnicismi e prestazioni pure. Pronti a intraprendere questo viaggio?

Autore: Tom’s Hardware Tom’s Hardware

Categorie
HardwareSoftware

Apple faces problems with iPhone 8 edge-to-edge display


Can’t get it to go

The fruity tax-dodging cargo cult Apple is set to dump one of the few things that were moderately interesting in the coming iPhone 8.

According to Cowen and Company analyst Timothy Arcuri Apple company is struggling with low production yields on the revolutionary edge-to-edge display rumoured for the Apple iPhone 8.

He thinks that this will mean that the outfit will have to dump the embedded the Touch ID fingerprint scanner technology, which until now has been housed within the physical button, beneath the glass display.

Arcuri believes Apple is looking at dropping the ambitious new technology for another less-exciting design for the iPhone 8.

Samsung is believed to have faced similar issues with the Galaxy S8, leaving it no choice but to relocate the fingerprint scanner to the back of the phone.

Arcuri believes Apple could follow suit and maroon the Touch ID scanner on the rear of the iPhone. He also thinks it is possible that Jobs’ Mob could drop its fingerprint sensor altogether, and rely solely on the face recognition technology believed to debut on the next iPhone.

However, this would be stupid as the technology is half-baked and not reliable enough to be the sole biometric security option included with the handset.

Apple could push-back the launch of the iPhone 8 until it can remedy the production problems and there are rumours that the next-generation iPhone will miss the company’s traditional September launch window.

Although there are all sorts of rumours put about by the Tame Apple Press, it is clear that the iPhone’s design has not been worked out yet and the next handset has yet to enter full-scale production.

Autore: edfu777 [AT] hotmail [DOT] com (Nick Farrell) Fudzilla.com – Home

Categorie
HardwareSoftware

Google scommette ancora su Cardboard ed estende il supporto WebVR

Google scommette ancora su Cardboard ed estende il supporto WebVR

Google rende più semplice accedere alle esperienze di realtà virtuale con WebVR e Chrome, anche ai possessori del “visore in cartonato” Cardboard.

Lo scorso febbraio Google ha aggiunto in Chrome il supporto WebVR, standard aperto che abilita esperienze di realtà virtuale senza la necessità di scaricare e installare alcuna applicazione.
Fino ad oggi, però, WebVR risultava utilizzabile solamente sugli smartphone Daydream-compatibili (vedere anche Realtà virtuale Google, presentato l’SDK per Daydream) utilizzando il visore Daydream View di Google.

Google scommette ancora su Cardboard ed estende il supporto WebVR

Adesso WebVR si apre agli altri visori: su Android basta infatti toccare un link per avviare app per la realtà virtuale e interagirvi anche con Cardboard (Google, divisione per la realtà virtuale e “X”).
Se si fosse in possesso del “visore in cartonato” Cardboard, si possono provare gli “esperimenti” in questa pagina.
Altre dimostrazioni, fruibili anche se non si fosse in possesso di un visore Cardboard, sono pubblicate a questo indirizzo.

Autore: IlSoftware.it

Categorie
HardwareSoftware

Dell’s Ultrasharp 30-inch 4K OLED Now On Sale: UP3017Q for $3500

One of the biggest bits of news to come out of CES 2016, over a year ago, was Dell announcing a new beacon in OLED monitors: a 3840×2160 panel measuring 30-inch diagonal using an OLED display was set to come to market. When we reported on it back at CES, they stated a $ 4999 price point for March 31st. What happened over the next 12 months was interesting: some journalists doing ‘hands-on’ reviews at tech shows, but nothing coming to retail, followed by plenty of CES 2017 news that the display had been shelved due to image quality issues. Well roll around another quarter, and it seems that Dell is ready to sell it, and shipping for this $ 3499 beast is only 1-2 weeks away.

Specifications of the Dell Ultrasharp UP3017Q
  UP3017Q
Panel 76.19cm (30-inch)
Native Resolution 3840 × 2160
Maximum Refresh Rate 60 Hz
Response Time 0.1 ms (black to white)
Brightness 300 cd/m² (typical)
0.0005 cd/m² (minimum)
Contrast 1000000:1
Viewing Angles 178°/178° horizontal/vertical
Pixel Pitch 0.1713 mm²
Pixel Density 147 ppi
Display Colors 1.07 billion
Color Gamut Support Adobe RGB: 100%
Rec 709: 100%
DCI-P3: 97.5%
Rec2020: 85.8%
Stand Tilt (5~21°),
pivot (+90°, -90°) and
height (100 mm) adjustable
Inputs 1 × DisplayPort 1.2
1 × HDMI 2.0
1 × USB Type-C (DP 1.2. PD 100W).
Audio None
Launch Price $ 3499

The Dell UltraSharp UP3017Q is a 30-inch display with a 3840×2160 resolution, response time of 0.1ms, and is set to run at 60 Hz (not 120 Hz as some outlets originally reported). The monitor can reproduce 1.07 billion colors (in this case we assume 10-bit), it covers 100% of Adobe RGB color space as well as and 97.8% of DCI-P3 color space (used for digital movie projection by the U.S. movie industry and is expected to be adopted in televisions and in home cinema), and 85.8% of Rec2020. The manufacturer declares a 1,000,000:1 dynamic contrast ratio, due to the characteristic black of OLED displays.

The UltraSharp UP3017Q is a thin monitor with narrow bezels, but not remarkably thin like OLED TVs, due to the internal power supply unit as well as complex logic inside. The monitor features a mini DisplayPort (mDP) 1.2 connector, an HDMI 2.0 port, and a USB type-C port which can be used for video and data connectivity, as well as power delivery up to 100W.

The Emissive electroluminescent layer in an organic light-emitting diode is made of an organic compound that emits light in response to an electric current. The organic semiconductor layer is situated between two electrodes and does not require a backlight. As a result, it can display deep black levels unlike LCD panels which also use various kinds of backlighting. Curved TVs and monitors are also possible, since the emissive electroluminescent layer is very thin and can take different shapes.

While OLED technology can deliver deep blacks, high contrast ratio and exceptional colors, it is not free of drawbacks. Colors can shift over time, and the organic layer may degrade over prolonged amount of time. To keep the lifespan of the OLED panel maximized inside the UltraSharp UP3017Q, Dell originally advertised a special integrated presence detector into the front panel of the display, which switches the monitor off when nobody uses it, though it is not clear if this is still present. Another disadvantage of OLEDs is a possibility of static image burn-in. The UP3017Q has a special pixel-shifting technology to try and inhibit this.

The Dell UltraSharp 30 OLED monitor will cost $ 3499 and is available to order in the United States. The display at this point is only aimed at professionals that work in color-critical environments such as graphic arts and photography. However, due to the colors, contrast, and ultra-fast response time, the UltraSharp UP3017Q will be a dream display for gamers, prosumers and other users thatvalue quality.

OLED panels are considerably more expensive to produce than modern LCD panels, partly because of lower yields. In 2015, an executive from LG Electronics said that yields of OLED panels had reached 80% and would continue to grow. At the International CES 2016, Kwon Bong-suk, the head of LG’s TV business, said that the company had cut prices of OLED TVs in the U.S. by 45% late in 2015. As a result, LG expected sales of OLED televisions to triple in 2016. Price reduction of OLED TVs indicates that production costs of organic light-emitting diode panels are going down. Perhaps, over time, the Dell UltraSharp UP3017Q will also become more affordable, or Dell will release an OLED display for a wider audience.

Original Source: @ChrisK101010

Autore: Ian Cutress & Brett Howse AnandTech

Categorie
HardwareSoftware

Acceso il super telescopio, vedremo l’orizzonte degli eventi

Gli eventi di questi giorni costituiscono il sale della vita di uno scienziato. Si tratta di quelle cose che generano un’attesa febbrile, perché sai che da un giorno all’altro tutto potrebbe cambiare, quei momenti dolcissimi che preannunciano la possibilità di una grande scoperta