ATI Radeon HD 4670 AGP

Benchmark Performance

The ATI Radeon HD 4670 AGP is a legacy part built on the 55 nm TeraScale architecture, using the RV730 chip with 514 million transistors on a 146 mm² die. Its raw compute output is rated at 480.0 GFLOPS FP32, with a pixel rate of 6.000 GPixel/s and a texture rate of 24.00 GTexel/s. These figures place the card at the 50th percentile among all GPUs in the database, meaning it sits exactly in the middle of the pack — neither a standout performer nor a bottom-tier part.

The card ships with 1024 MB of GDDR3 memory on a 128-bit bus, yielding 25.60 GB/s of bandwidth. Memory clock is 800 MHz, or 1600 Mbps effective. This bandwidth is modest by modern standards, but it is sufficient for the card’s target resolutions given its 320 shading units, 32 texture mapping units, and 8 ROPs. The balance between compute and memory is reasonable for its era; the card does not appear to be severely bottlenecked in either direction, though the 128-bit bus limits headroom at higher resolutions.

Because the nearestRivals array is empty, direct percentage comparisons against specific competitors cannot be made from the data provided. However, the 50th percentile ranking gives context: half of all GPUs in the database score higher, and half score lower. This suggests the HD 4670 AGP is a middle-of-the-road performer, roughly on par with the median GPU. In practical terms, this translates to playable frame rates at lower settings for contemporary titles of its release period, but it will struggle with modern workloads that demand more memory bandwidth or shader throughput.

The FP32 throughput of 480.0 GFLOPS is the key number to interpret here. Divide that by the 320 shading units, and you get 1.5 GFLOPS per shader per GHz, which is consistent with the TeraScale architecture’s design. The 24.00 GTexel/s texture rate means the card can feed its 32 TMUs at a reasonable clip, but the 6.000 GPixel/s pixel rate — driven by just 8 ROPs — will be the limiting factor when fill-rate-bound. Expect strong performance in shader-heavy scenes, but noticeably weaker results when the render target is large or when alpha-blending is heavy.

Who Should Consider It

This card is an AGP 8x part, which immediately narrows its audience: only older motherboards with an AGP slot can use it. If you are maintaining a legacy system from the late 2000s — specifically one built around the Radeon R700 generation (HD 4600 series) — this is a drop-in upgrade path. The 1024 MB framebuffer is adequate for 720p gaming at medium details in titles that support DirectX 10.1. At 1080p, the 128-bit memory bus and 25.60 GB/s bandwidth will become a constraint; expect to lower texture quality and disable anti-aliasing to maintain smooth frame rates.

For users targeting 720p or lower resolutions, the card’s 320 shading units provide enough compute for many esports titles from its era, and the 24.00 GTexel/s texture rate ensures textures load reasonably fast. However, the 8 ROPs cap pixel throughput, so scenes with heavy post-processing or large particles will show stutter. The 50th percentile ranking suggests that if you are coming from an integrated GPU of that period, this will be a clear step up; if you are coming from a higher-end discrete card, it will feel like a downgrade.

Given the DirectX 10.1 support, you are limited to games that run on that API or earlier. DirectX 11 and later titles will either not run or will fall back to compatibility modes with reduced features. OpenGL 3.3 support is present, which covers a range of older PC ports and emulators, but Vulkan is not supported, cutting off access to many modern cross-platform titles and some emulators that rely on Vulkan for performance.

Ray Tracing and Feature Set

The HD 4670 AGP has no ray tracing cores and no tensor cores. Ray tracing is entirely absent from this architecture — TeraScale predates any hardware acceleration for that workload. If you need ray tracing, this is not the card for you; there is no software fallback that will make it viable. The card’s feature set is defined by its API support: DirectX 10.1 (specifically the 10_1 feature level) and OpenGL 3.3. This means it can handle the visual effects from the DirectX 10.1 era — things like improved shadow filtering and alpha-to-coverage — but nothing beyond that.

The display outputs are 1x DVI, 1x HDMI 1.3a, and 1x VGA. The HDMI 1.3a port supports 1080p video output and multichannel audio over HDMI, which was a notable feature at launch. No Vulkan support means that any modern game or application that requires Vulkan will not run. The absence of tensor cores also means no DLSS or any AI-based upscaling; you are limited to whatever resolution the card can render natively.

In terms of architecture, the RV730 chip is a cut-down version of the larger R700 dies, but it retains the full TeraScale feature set: unified shaders, a texture unit per quad of shaders, and a fixed-function ROP partition. The 320 shading units operate in a scalar fashion, which is less efficient than the vector architectures of later GPUs, but it was competitive for its time. If you are looking for modern features like mesh shaders, variable rate shading, or hardware-accelerated ray tracing, you will find none here.

FAQ

Q: Does this card support DirectX 11?

A: No. The ATI Radeon HD 4670 AGP supports DirectX 10.1 (feature level 10_1) and OpenGL 3.3. It does not support DirectX 11 or Vulkan.

Q: How much memory does it have, and what type?

A: It has 1024 MB of GDDR3 memory on a 128-bit bus, providing 25.60 GB/s of bandwidth. Memory runs at 800 MHz (1600 Mbps effective).

Q: What is the TDP, and what power supply is recommended?

A: The TDP is 59 W, and the suggested PSU is 250 W. No power connector is listed, so the card likely draws all its power from the AGP slot.

Q: Can this card do ray tracing?

A: No. It has no ray tracing cores or tensor cores. Ray tracing is not supported in any form on this TeraScale architecture.

Q: What display outputs are available?

A: The card has 1x DVI, 1x HDMI 1.3a, and 1x VGA. The HDMI port supports 1080p output and audio over HDMI.

Q: What is the release date and production status?

A: It was released on July 16, 2009, and is now end-of-life. It uses the AGP 8x bus interface, so it is only compatible with older motherboards.

Q: How does it perform relative to other GPUs?

A: It sits at the 50th percentile among all GPUs in the database. Half of all GPUs score higher, half score lower, making it a median performer.

How It Compares

The nearestRivals list is empty in the supplied data, so there are no direct competitor cards with scores or deltaPct values to reference. This is unusual — most GPUs have at least one or two rivals — but it likely reflects the card’s unique position as an AGP part released in 2009, when the industry had largely moved to PCIe. Without rival scores, we can only place it via the 50th percentile ranking.

In lieu of direct rivals, consider its predecessor and successor. Its predecessor is the Radeon R600 generation, which used older TeraScale 1 architecture and lacked DirectX 10.1 support. The HD 4670 AGP improves on that with DirectX 10.1 and a smaller 55 nm process. Its successor is the Evergreen generation, which moved to DirectX 11 and introduced a more efficient shader design. The HD 4670 AGP sits between these two, offering a bridge from DirectX 10 to the DirectX 11 era.

If you are comparing it to a PCIe version of the same chip, the AGP bus will be a limiting factor. AGP 8x has lower bandwidth than PCIe x16, and the card’s 25.60 GB/s memory bandwidth is already modest. On an AGP system, you are also likely limited by an older CPU, which will further constrain performance. The card’s 50th percentile ranking should be interpreted as its standalone compute capability, not what you will see in a full system context.

Power and Cooling

The TDP is rated at 59 W, which is low by modern standards but was typical for a mid-range card of its era. The suggested PSU is 250 W, which is modest and should be compatible with most ATX power supplies from the late 2000s. There is no power connector listed, meaning the card draws all its power from the AGP 8x slot. This simplifies installation — no need to route an extra PCIe power cable.

The card is dual-slot, so it will occupy two expansion slots in your case. Its length is 193 mm (7.6 inches), which fits in most standard mid-tower cases from that period. The 55 nm process from TSMC keeps power density manageable; the 514 million transistors on a 146 mm² die yield a transistor density of 3.5M per mm². This is a mature process node, so thermals should be manageable with the stock cooler, but given the card’s end-of-life status, you may want to check that the fan still spins and the heatsink is clear of dust.

Given the 59 W TDP, a 250 W PSU is sufficient. If you are upgrading an older machine, ensure the PSU is from a reputable brand and in good condition — a failing PSU can cause instability regardless of the card’s low draw. The absence of a power connector also means there is no risk of plugging in the wrong cable, which simplifies the install. The dual-slot cooler should handle the heat output without issue, but in a cramped case with poor airflow, consider leaving the adjacent slot empty.